DD lives in a flat that's owned by a family member and she pays the family member rent. She graduated 3 years ago and we only just had a conversation about council tax and she was bloody clueless and said she doesn't pay it as she gets an exempt letter and I explained that's because she was a student at the time she moved in. If she updates it now, is it going to be found out she wasn't actually a student for the last few years and is she going to be billed over 3k? I'm aware she should obviously have to pay it but I really don't know how she will.