If she is eating the ghost shrimp aggressive then get 6 of them and squeeze them in the net to kill them and see if she eats. If she does then wait a couple of hours and do the same but add small pieces of frozen shrimp. Nothing fancy just the cheap kind from walmart that comes in the bags. I think 80-100 is the smaller ones. I had stubborn rays that would only take ghost shrimp converted to frozen shrimp in 2 days. They just have to recognize it as food. Cut the shrimp into small slivers and squeeze it up with the ghost shrimp then drop all in together.