@ephenay: Good good.
It's not surprising that she was a bit on edge.
One tip, if after her shed she's still not eating, that Emily has said a lot, is a small feeding location. IE: get a small take out dish with a lid (and obviously put holes so she can breathe!) and put the mouse against the wall and put the snek in.
She'll find it, and there's a better chance she'll eat it.
No guarantee, of course.