I think Laura’s own descriptions of herself are a hoot to say aloud, although it is not dialog per sec, I did it and I highly recommend everyone do so! :D

When I had reached my eighteenth Year, I was recalled by my Parents to my paternal roof in Wales. Our mansion was situated in one of the most romantic parts of the Vale of Uske. Tho' my Charms are now considerably softened and somewhat impaired by the Misfortunes I have undergone, I was once beautiful. But lovely as I was, the Graces of my Person were the least of my Perfections. Of every accomplishment accustomary to my sex, I was Mistress. When in the Convent, my progress had always exceeded my instructions, my Acquirements had been wonderfull for my age, and I had shortly surpassed my Masters. (Letter the 3rd)

The Persuasion of Janetta is also very funny:

"So far from having ever declared it, I have no reason to imagine that he has ever felt any for me." said Janetta. "That he certainly adores you (replied Sophia) there can be no doubt. -- The Attachment must be reciprocal. Did he never gaze on you with Admiration -- tenderly press your hand -- drop an involuntary tear -- and leave the room abruptly?" "Never (replied she) that I remember -- he has always left the room indeed when his visit has been ended, but has never gone away particularly abruptly or without making a bow." "Indeed my Love (said I) you must be mistaken -- for it is absolutely impossible that he should ever have left you but with Confusion, Despair, and Precipitation. Consider but for a moment, Janetta, and you must be convinced how absurd it is to suppose that he could ever make a Bow, or behave like any other Person." (Letter the 12th)

IMO all the silly accusations Laura and her friends make against the more reasonable characters are loads of fun, I can especially see young people enjoying acting out the rebellions against parental authority but Laura’s internal condemnation of the snorer brought me to tears because I come from a family of snorers and I am really glad we have not met up with a Laura! :D

From Letter the 14th…

It was so dark when I entered the Coach that I could not distinguish the Number of my Fellow-travellers; I could only perceive that they were Many. Regardless, however, of anything concerning them, I gave myself up to my own sad Reflections. A general silence prevailed -- A silence, which was by nothing interrupted, but by the loud and repeated snores of one of the Party.

"What an illiterate villain must that Man be! (thought I to myself) What a total want of delicate refinement must he have, who can thus shock our senses by such a brutal Noise! He must, I am certain, be capable of every bad action! There is no crime too black for such a Character!" Thus reasoned I within myself, and doubtless such were the reflections of my fellow travellers.

I also found Laura, despite all her sensibilities is quite faithless and it shows in your quote from Letter the 14th on Edward's death. Apparently when Edward was her husband then he was all good and when he did her the Evil of dying then he is suddenly that “luckless Swain!”

IMO L&F would make a great play or movie—being a fan of spoof movies anyway I can really picture this. I think L&F is a really fun way to introduce people to JA, I only wish I had had the opportunity to do something like this in school, as I said above I cannot think of a kid who would not enjoy the idea of rebelling against parental authority and the over-the-top ideas and dialog IMO would be a wonderful way to let emotions and feelings run wild in the acting. :D