OK all, so I removed the moss and I'm waiting a bit longer. I will wait two weeks from the last time I offered. Yes I feed in tank, no reason to add stress removing her to feed somewhere else.Worst case, i'll surprise her with a live one if she rejects another offering. Lastly she was 650 g when I weighed her. Seems she hasn't lost any (or barely any) weight because she was 710g weight before a massive poop and I didn't weigh her after that.
Thanks for the advice everyone!