She only had the one spell; she'd have to be quick, so running inside... wow, big... let's see... if she was going to store a bunch of magical collars... she'd either store it at the very top, or the very bottom... well, she was on the bottom; lets see if she can find the stuff... so she'd go and try and catch glimpses of the rooms as they were opened.  Hopefully she'd spot what she was looking for...