Sounds like you're doing good work :)
I fostered four kittens when I was a kid after their pregnant mom followed me home. We gave three away and kept one around, but he went missing after he grew up. Hope that he just got snatched away by someone because he was really charming, even to strangers. The mom still lives with my parents and I have a strong bond with her. Unfortunately no pets are allowed in my apartment so I gotta live without cats for now :/