OP...it sounds to me like 1 of 2 things could have happened. Either you may have had mouse scent on your hands...or...your BP has associated cage cleaning day with feeding day and as soon as you started taking stuff out of her cage, she went into "feeding mode". I always make sure that feeding time is separated from all other activities with my BP. I never handle him or do any cage maintenance on feeding day (except change his water). I think that they "know" when its feeding time. When I go into my snake room at 9:30 on a Monday night (about 1 hour after his light goes out) he is ready to feast. He comes flying out of his hide and slams the rat usually before I get it all the way into the enclosure. Just my 2 cents....