Hi Debi,
We also built an apt on our home for my Mom about 2 yrs ago. My father had died and she was very lonely and had never lived alone before. Unfortunately she lived 3 hrs drive from me and I could not be caretaker from a distance and my brothers who lived nearby were not very helpful so we did not have a choice because she was beginning dementia and cannot be alone.

Your Mom will acclimate...it is an enormous change for them. Change is very hard later in life. When my Mom first got here I did things to make her feel special like making her favorite meals or doing things she loved like going to tag sales or to the library, so she was grateful. She still gets sad for her house and former life but I explain it is just a new phase. We got her her first computer, an IPAD, at 89... I keep telling her that is quite an accomplishment...she uses Netflix every day, play solitaire and even has learned to use YouTube to watch clips of her favorite old comedians like Jack Benny and Sid Caesar and laughs herself silly. I cannot recommend this enough for older folks. If my Mom, now 90, with mild dementia can learn to use it, anyone can and honestly, she had never touched a computer in her life.
My best, Diandra