Had such a case here too. Was driving me nuts, tried much, but ended now up in: small box (in a rack) and the front is covered with a black pond liner (not sure how you call that over there, but anything that is dark and covers should do it). I also put the opening of the hide in another direction than the front, so he doesn't get bothered that much when I open the box. Did that setup last Weekend and tried yesterday to feed him with something between rat pup and rat hopper (it couldn't hurt him) in the middle of the night. Put it calm but quickly in, closed to box and went out of the room. Bang. Job done.

The male has ~490 grams, so it was an easy pray. I will now let that setup stay till he feeds another few times. The F/T with long tweezers just stressed him even more, I figured that doesn't help at all. I think make her feel as safe as possible is best you can do. Good luck with yours!