If none of these suggestions fix your kitties problem, you may need to consider rehoming her.
I know you want to keep your baby, but it's possible that she would do very well in a home where she is the only kitty. As long as the new owner(s) know that there have been problems, they can start with litterbox retraining immediately.
I know you want to keep your baby, but it's possible that she would do very well in a home where she is the only kitty. As long as the new owner(s) know that there have been problems, they can start with litterbox retraining immediately.