I laughed especially well at:

You speak with such noble resignation of Mrs. Jordan & the Opera House that it would be an insult to suppose consolation required—but to prevent your thinking with regret of this rupture of your engagement with Mr. Smithson, I must assure you that Henry suspects him to be a great Miser.

I am all for avoiding great misers and another:

You are very kind in planning presents for me to make, & my mother has shewn me exactly the same attention—but as I do not chuse to have Generosity dictated to me, I shall not resolve on giving my Cabinet to Anna till the first thought of it has been my own.

LoL! (;D)