My dd, 12, is sent up to bed at 9pm and allowed to read, text etc until 9.30pm. It's then lights out. She claims ALL her friends have their phones all night and don't go to bed until at least 10pm. So, what is a reasonable bedtime for a 12 yo (year 7). Not having the phone in the room all night isn't up for negotiation, but bedtime might be 