We are pretty confident that dd15 is stealing money from us - every few days or so there just isn't the right amount of money in our purses. Not huge huge sums and no reason to think it's being spent on anything more sinister than pizza with her friends or whatever. Of course she denies it. I know one answer is "so lock the door to the room where the money is kept" but that doesn't really work for me a) it's not practical all the time and b) it's not about the money, it's about trust. Thinking (in faint desperation) of getting one of those hidden "nannycams" (do they actually work?) to see if we can get definite proof, in which case we can confront her and at least have the "we need to trust you" conversation. The problem is that at the moment we can't because she bats it away by denying that she is nicking it. So depressing and horrible.