It was really nice of your brother, and I am sure that he sees the value in having great grandma there - and she is alone now, so even more... but, definitely nice.
I guess you don't have to have issues with those parts, but, given her age, and her lack of stairs in her own house, it will do more than whisper after a week. Yay for elevators!
The boys' faces are precious and hello? She is 88! Even if she were only 78, she is a looker! OMG. She looks amazing!