All you need to do is keep the toys spread around the house. If she finds one, tell her that's just where you set it down last time you had it out. Under no circumstances keep them all together. Then boldly get whichever bow you want to play with out. If anything is said, merely say this is the same bow you had out a few minutes ago. Hopefully she won't be able to tell the difference. Remember to always keep a straight face, and don't look down and left.