Just an update... just checked her card. Last meal was a small to med rat on April 10th. So it's been just under 3 months since eating.
I just moved her to a smaller bin. She is now in one of those taller 15qt bins. Just her and her waterbowl, hopefully this will help. I will not bother her for 2 weeks and try a small rat again, live of course. Wish me luck!