Going back over L&F, I have to laugh at the first two letters (that is as far as I've got).

Letter #1-please tell my daughter your about your youth. At age 55 you should be free from all idiotic men (father and lovers).

To what purpose is Isabel wanting her daughter to know this? As an example of how not to behave? As a warning? I'm getting shades of Monty Python in "how not to be seen".

Letter #2-She can't agree that she will "never again be exposed to Misfortunes as unmerited as those I have already experienced" This is too funny, all her misfortunes were unmerited. One would hope that at 55 yrs of age, some lessons would have been learned.

"I will gratify the curiosity of your Daughter; and may the fortitude with which I have suffered the many Afflictions of my past Life, prove to her a useful Lesson for the support of those which may befall her in her own." Fortitude?!? With as many times as she faints, I don't think she has that much strength of mind. Unless you consider fainting at will a strength.