So, last a pregnant female shows up at my house. She's seems to be a real sweetheart, and has a collar. No tag, but a collar. I think it's semi-old, but still fits and is in pretty good shape.

I let her in to see if she wanted some food, and she ate like 2 cups of cat food. She was hungry, but not too thursty. I checked her over, and no fleas, or external parasites. She seems in pretty good shape, just maybe a little skinny.

Of course, she seems to want to kill my male kitten. Sorry, had to go back outside. Simba is my baby, and he owns this house. Lol.

Well, she took off and is back. I gave her some more food, but she seems to want to stick around now. I have an animal lover problem, and I want to keep her. I just can't stomach her having her kittens on the street. My cat is up-to-date on all his shots, and she seems healthy so i'm not worried about that. She doesn't want to fight with him, but if he goes up to her she gives a warning growl.

My bf says, no, she's fine outside.

What would you do? Keep her? Or, Let her go, and of course stop feeding her or she'll never leave?