Her right leg looks a bit crooked to me for some reason. I do like her hair and glasses though.
I think this looks fine as it is though. Kind of thinking she might just be having a rough or lonely day and reading a book to get away from her problems for awhile.
The background honestly is not that bad, maybe a few more lines to show how hard it might be raining outside though.
Overall, pretty good piece, hope to keep seeing more good art in the future.