My adult daughter and 11 year old grandson live with my husband and I.
My daughter has minor mental health and physical issues, but works, eats well, goes to the gym, etc. She can be normal, socially appropriate at work (I assume) but at home she is not very communicative with us!
Today she, grandson, and grandson's friend, were all home. It was kind of quiet, I wandered out to see what grandson and friend were doing, to see if they or their mom had any plans for the afternoon. And they were all gone! I ASSUME maybe she just took them to lunch???? But isn't that kind of rude to just leave without saying anything? She has left like this several times with and without grandson.
It seems so obviously rude to me that I find it hard to explain to her why I think it is rude. I'm not trying to keep track of her. It just seems like common courtesy when you live in a house with various people to say..."I'm doing some errands, be right back." "I have an appt., be back in about an hour." "I'm taking the boys to lunch, maybe a movie after." etc.
Well....got it off my chest. Now how should I approach her to let her know we're not keeping track of her movements, it is just good manners to say "I'm going now."