Hi,
Generally if they strike and "kill it" then don't eat it turns out to be security related. Well, there are other reasons, but that is one of the first ones I would try to see if it helped.
Are you standing watching her eat?
I would also think about bumping the temps up a couple of degrees if you could but the hot side isn't too far off.
When you moved the tank did you change amnything about its layout or anything?
dr del