Yep, that's right -- we said "nothing." With all our adult responsibilities, sometimes we forget that being a kid is hard work. Every now and then, your tween just needs to have some alone time to decompress from a long and tiring day of learning and navigating the emotional minefield of school.
Tweens need a place to call their own. If your tween has her own room, make sure she has a comfortable area where she can just relax and read, nap, or simply think. If your tween shares a room, work with his siblings to ensure that he has some privacy from time to time.
In the same way that some of us need to sit quietly after work with a glass of wine and unwind, your kids might also need to sit quietly with music and headphones and mentally work through their day. Let them do that.