Oh Lisa {{{{{{HUGS}}}}}}

I know others probably won't agree with this, but what about putting her back into the park. After all, isn't that what you do? Trap, Neuter, Release. You can only do so much for her and Lord knows you have tried your best. The number one priority, in my opinion, is "YOU" Getting stressed out by this is NOT good for your health or your crew.

OR, do you think she would adjust to being an only cat?