Put her in a small shoe box tub with a small hide in it. Then put a hopper mouse in with her (live) then leave her alone for a couple hours. If she does not eat you can pull the mouse out and leave her alone but put heat under the tub (only about half). Try again the next day but do it at night. This time I would leave the hopper in for longer, its (the mouse) won't survive on its own much longer anyway. You can give the mouse wet dog food but if the mouse is to large it will scare the snake.