Since they aren't babies and they haven't eaten all year make sure their set up is right. Snug hides, not a lot of open space, temps, etc. Since she's interested leave the mouse in with her for about 10 minutes and leave the room. Sometimes they can be shy about eating, or be an idiot. I have an idiot het pied female right now that strikes and strikes the rat, but doesn't constrict. I think she likes to hear it squeal Also, make sure the mouse is well fed and watered before you leave it alone with your snake.