48 hours after the terrified black cat got trapped & moved & was petrified & growling at me..... we've made friends. I thought she may be feral as she was so bad on Sat / Sun, but she can't be... I think she is just a very scared little girl... she made friends with me.
I went to see her this evening & she'd eaten all her food, so I fetched her some more & she was ok when I gave it to her & she started eating it whilst I was still there, so I very carefully approached her & she was ok..carried on feeding. I gently stroked her head all the time she was eating & she liked it. She didn't move far from her "nest" but what fantastic progress. She's very scared still & it will take a little more time before I can truly assess how tame she is, but at least she's much better than I thought.
No hissing or growling.
Oh & the kittens are doing great.