I have several inside cats that were strays, and one completely feral cat that I have finally tamed down and she is quite delightful. She was truly feral, she has lived in my neighborhood for 5-8 years, and used to only come out on garbage days, and get into the garbage. Now, for 3 years now, I have fed her, and slowly she has learned to trust me. It took me 6 months before she would even come near me, and probably a year before I could pet her. Now I can pet her, and she sleeps in my garage at night. She is already been TNR. Her name is Arwen and I adore her. She used to only trust me, but now she loves my husband also, and the weirdest thing about her, she doesn't like other dogs, except my neighbors yellow lab. She waits for the dogs owners to walk him every evening, and she follows them on the walk and rubs up against the dog and the dogs owners the entire time. She will throw herself down on the ground in front of the dog and roll around exposing her belly. She has never shown me her belly, and just recently started letting me pet her while she is laying curled up on her bed in my garage. She completely ignores my dog, who is cat friendly, and wants nothing to do with any other friendly dogs in the neighborhood.....I jsut don't get why she does this, but it is so interesting and I can't figure out why she loves this dog so much.
But that is my feral story. I don't work with a rescue. My 3 indoor cats are all strays that found me over the years, and I have a 4th stray that I am fostering until I find a good home for her. They have a way of finding me
Looking forward to hearing more about your ferals