i would write about:
How she demonstrates her love for true friends and true family.
How she inspires this reader to be a better friend and family member.
How she has no apparent need for words like "true" that less talented writers resort to when they don't know how to express the distinction between friends and "true" friends.
How she allows this reader to understand that the group of true friends is at first misunderstood as smaller than the group of friends, even though it is in fact much, much larger; and how much happier we all are when we realized our mistake.
How she inspires us (using among other devices the conventional appeal that true love and conjugal bliss have for a huge percentage of novel readers) to strive for the understanding that the group of true family is much, much larger than that of family. (The use of mating scenarios could in this regard be seen as a prototype of family expansion.)
How she refers to conventions without using them. (Or perhaps: how she encourages this reader to see his world this way.)
How she never falls into clichés like "marital bliss," even when she relies on them. (Or: How she is the English answer to the French "lieux communs" that fascinated Flaubert.)
How she conveys the content and feel of the most important human interactions.
How she stands apart from readers like Emerson (who wrote something disparaging about her being concerned only with trivial matters, like finding a mate, or something like that) who cannot see that she addresses the most important issues facing us all as human beings. (Interesting question here: how does this figure in the film _You've Got Mail_?)
And i would write about many, many more things that i don't have the time or talent to type out here. And i might even be missing the most important ones.
Oh, well...: That's yet another reason i so love Jane Austen.
(And as a man i feel some obligation [?] to add that in all this i have some difficulty in maintaining the distinction between loving Jane Austen and loving to read her works. That's yet another failing she doesn't fail to point out in her work. That [meaning: the way she points out masculine failings] might be one of the main reasons why i like to say that _Northanger Abbey_ is my favorite novel of hers. Unfortunately, i am also influenced in that judgment by my perception that this particular novel is generally treated as inferior to some of her other works, and perhaps even as the least successful or satisfying or deep or something [as Wally (my alter-ego, if that's the right word) says in _My Dinner with André_: "i don't know; you know." Or something like that], and i have this thing [as they say] about standing up [?] for the downtrodden.)
And after all that, i would write that most of this is/was for my own pleasure, and that anyone interested in finding a Jane Austen presence on the web could start by visiting Pemberley (where i might want to live if i were in electronic format).