Cat Misagine

Fokin silken thomas and his sister tandy are both feril cats. They live in a wooden house, coddle up with each other at night time to keep warm. Fokin has lost one of them before - she was poisoned by another cat. She can't call animal rescue people because they get terrified when someone is near their area. To morrow i'm going to have to literally try and trap her. But the problem is, he's most likely going to go in there first. So that's a folk in doomsday scenario. And if i try to, and if i scared em too much, they might leave for two days. I'd be quite upset