My daughter is almost 20 years old and goes to school away from home, so she has her room over 2 reading breaks, thanksgiving, Christmas break, and summer holidays. I brought up the idea of sharing a room with her 12 year old sister which she didn't like at all. Currently her 12 year old sister and her 11 year old sister are sharing a room.
Is it a good idea to put the 20 and 12 year old together so my 12 year old daughter can kind of have her own room? Or does my 20 year old daughter need her space, although it's not used all the time? We do have another room, so the three of them could have their own room, but we have lots of guests that the other room should be vacant for.
What should I do?