DD(21) is home from college for the summer. She acts like nothing more than a lodger. Will grace us with her presence when it's time to eat only and will spend 24/7 on her phone locked in room otherwise. Never makes time for the rest of the family but will happily go out with friends. She's had a few letters and a parcel which has been on the coffee table for two weeks. For context it's not a messy house, there's nothing else on the table but her letters and parcel. But this is her way, she notices nothing about the household and acts like it's a hotel. If something has fallen on the floor she will step round it. Everything has to be pointed out to her every single time. This has happened before when her driving licence arrived. It was on the table for a few weeks and she asked me if it had come and I said yes there it is. If I hadn't told her it would have been there for the rest of her life. No ND, all regular.
AIBU to leave it, even though they look like important letters?