ch29:0 Ch30:2 (Mr Knightley, Frank) Ch31:0 Ch32:3 (Mrs Elton) Ch33:1 (Emma) Ch34:2 (Jane, Mrs Elton) Ch35:1 (Mrs Elton) Ch36:2 (Mr Weston)

Chapter 29: Plenty of specious argument, but no lies.

Chapter 30: "you won't easily find one in a thousand who considers virtue to be its own reward(Ovid,Ex Ponto II.III:11-12) and I think Mr Knightley (and possibly Mr Woodhouse, too) is more distressed by the prize fine dancing might gain for Frank Churchill, than indifferent. Mr Knightley's confession "I never look at it - I do not know who does" is contradicted by his past conversation with Miss Bates "Oh! very delightful indeed; I can say nothing less, for I suppose Miss Woodhouse and Mr Frank Churchill are hearing everything that passes And ... I do not see why Miss Fairfax should not be mentioned too. I think Miss Fairfax dances very well"
Speaking of Miss Fairfax, her diffidence towards Emma seems to be completely overcome by her delight at the thought of their dancing together. (and Mr Weston and his son have been more successful in promoting their friendship over the last fortnight, than Mr Knightley and Mrs Weston have been over many years).
Mr Woodhouse's fears of the salubrity of an upcoming ball seem to be fully realized, with Mrs Churchill "too ill to trifle", Jane Fairfax "suffering from headache", Emma suffering ennui and Frank Churchill lovesick. I am including Frank Churchill's denial of Emma's accusation "You would not have been so long in coming, if you had had a pleasant idea of Highbury." as a lie, although a laugh from him and Emma's being convinced of her own opinion in the face of contradiction, are the only proofs I can offer.

Chapter 31: No lies, although Emma's feelings towards Frank as she returns to her drawing (a likeness? Of Frank?) are contradictory - one moment "she could not yet imagine he had any fault" the next she reflects "I do not altogether build upon his steadiness or constancy - his feelings are warm, but I can imagine them rather changeable. -Every consideration of the subject, in short, makes me thankful that my happiness is not more deeply involved.".

Frank is not without his own contradictions. His letters have improved - "no suspicious flourishes now of apology or concern; it was the language of real feeling towards Mrs Weston" and improved still more by the inclusion of her own name, in all cases but the last adorned by a "broad wreath of gallantry.".

Chapter 32: Except for her gown, Mr Elton's bride shares his lack of elegance and self-aggrandizing lies. "Just what he deserves" in Harriet's blind but illuminating opinon.
Mrs Elton tells us a lot about herself while pretending to admire Hartfield. Maple Grove has a staircase and a shrubbery, and "People who have extensive grounds themselves are always pleased with any thing in the same style" is not just a lie, it is an unsubtle attempt to show off the superiority of Maple Grove to Hartfield. She seems particularly determined to forget her home is in Bristol - "There is nothing like staying at home, for real comfort." although she would rather stay at Maple Grove. Like Emma, Mrs Elton's musical friends speak of her taste, rather than her execution, and while she "absolutely cannot do without music. It is a necessary of life to me" as a married woman she is aware that she is "apt to give up music

Chapter 33: Mrs Elton appears as good as her word in this chapter - excepting her determination to hold "musical parties to draw out [Jane's] talents", each one of her intended actions appears to have been implemented to the combined knowledge of Emma, Mrs Weston and Mr Knightley (and there is no proof that Mrs Elton hasn't held musical parties). Why Jane should agree to it is not well explained, I think - Mrs Weston's idea that Jane tires of Miss Bates company seems as little likely as the idea that she (Mrs Weston) tired of Mr Woodhouse, and thereby accepted Mr Weston.
So, the one lie of the chapter falls to Emma "What I said just now, meant nothing." No? There is too much fancy foot-work going on, too much fear and alarm, for just nothing. Mr Knightley is not to know that it is (unrepentant) Mrs Weston who deserves his displeasure, not Emma.
When Emma refers to "dear Mrs Elton", I take it to be a playful appellation, rather than a lie.

Chapter 34: Jane Fairfax claims she "reached home before the rain was too much"
and Mr John Knightley corrects with empirical evidence: "you were not six yards from your own door ... and Henry and John had seem more drops than they could count long before."

When it comes to alternative letter-gathers, Mrs Elton claims she cannot remember the name of "The man who fetches our letters every morning". If she could, she would lose the opportunity to use the plural form to refer to her male staff and with it the ability to imply they are too numerous to individuate, but when Jane mentions her grandmother's servant there is no amnesia:-"so much as Patty has to do!". I cannot believe her.

Chapter 35: Mrs Elton clamors for compliments on her finery and her taste for simplicity."I have...quite a horror of finery...I have some notion of putting such a trimming as this to my white and silver poplin."

Mr Weston, coming as he does from London, could have given the party some very interesting public news to share but the dispatches we hear of have the joyous (for some) news that at the end of next week Frank Churchill will be in town. According to The Morning Chronicle of Thursday, April 7, 1814: "Reports were in circulation of Bonaparte having been made prisoner, of Marmont having declared for Louis XVIII and of two Deputies having arrived from the French Senate on a mission to Louis XVIII.", and Thursdays dispatches to the War Department brought the news that the Allied Army had taken Paris on the 30th of March.
In fact, the French Senate had on the 1st of April issued a decree (pre-dated to the 5th), casting Napoleon Bonaparte from the throne, and Napoleon had preempted the degree and made a conditional abdication on the 3rd of April, this abdication been refused and his surrender accepted on the 6th, the formal treaty ratified on the 13th, the news of victory reaching Wellington in Toulouse on the 17th, whereupon hostilities ceased.
Effectively, the long war with France was to be over by the end of the following week, and all of London was waiting eagerly for the letters that announced it.
Coincidence? I think many families would have been eagerly awaiting each mail, the arrival of the peace and the return of their men, and exclaiming things like "In town next week - at the latest, I dare say;...most likely they will be there tomorrow or Saturday". (the news "Bonaparte Dethroned" was first published in the late editions of the Saturday 9th of April papers, on the information of private mails from France dated 4th of April)
Reference: British Library 19th Century Newspapers, April 7, 1814 and April 9, 1814

Chapter 36: Mrs Elton is taken at her word in her unflattering pretense "Selina is no fine lady.". This narrowly escapes being a lie even though it is a statement uttered to another person and believed to be false, because she had not expected Mr Weston to be deceived by it. I can understand her nicety in taking sheets with her, and Mrs Churchill's haste on the road, after reading this post of Julie W's on the conditions of coaching inns.