Heartwarming story, good on you
She should still be capable of reaching full size, she's probably not smaller than she would be in the wild at her age, they don't need to eat near as much as most of us feed them to be healthy. I'm sure she'll still be able to breed as well but I personally wouldn't recommend breeding a normal unless you really think she has something to prove out, there is just way too many animals needing homes so not the best to make more normals but that's up to you to decide. Just make sure you have a plan for the babies and are ok with keeping them if you can't find them good homes.
Good luck with her, sounds like you're off to a great start!