DD is 16 gets £100 a month allowance. We have access to her online banking, DH has checked it today and she got £70 out as soon as the monthly payment went into her account a week ago. She had a couple of pounds in her purse this morning. She hasn't been out or been shopping, so she should only have paid out for bus fares and maybe a couple of coffees. I'm quite shocked and don't know what to think. DH says 'just ask her' which is reasonable but she will know we've been checking her bank account. WWYD?