Ive had to rescue alot of critters... and enjoyed it to the max... the really young ones that you have to momma are the best
( Texkan ...dont go there....lol lol )
She should be easily trained to a litter box...
Get a shallow container and put her in it with a little litter... after a few times they figure it out
I find cats are very easy as pets...unlike dogs they are almost maintenance free..set out some food ... a litter box... and just enjoy their antics
I have a catdog.... he fetches.. brings the little nurf ball to me to throw again...
CATS ARE KEWL
Thats so sweet of you to keep her safe... not everyone saves animals... specially cats