IE: personal space, privacy, being able to express herself w/o offending. My mother recently started to stay with us, only at night with my fathers recent move to a nursing home. I feel safer with her here (very rural area, country road). My wife and 18 yr old daughter feel that my mom is somewhat invading their space. She's only here 2 hours a night and 1 hour in the am when everyone is getting ready to go to work. Suggestions?
Then work on the practical aspects of the problem. For example, set boundaries to maintain privacy. Tackle one issue at a time, but don't spread the whole topic out over months. Get things into better harmony as quickly as you can.
Is this intended to be for the rest of your mother's life? Is this a precursor to her moving in completely?
Why isn't your mother safe alone at night? What are her impairments?
Provide a few more details so we can also get more specific.
Either way, it is an adjustment for everyone, including your Mom. You grew up with your Mom around so your know her habits, etc. For your wife and daughter, this is a new adjustment.
Is your Mom underfoot when your wife and daughter are trying to get ready for work? I know that could be bothersome especially if they all need to share a bathroom and are trying to get out on time to go to work. If that is one issue, have your Mom eat breakfast first with you.... then she can have the bathroom all to herself the rest of the time.
How mobile is your Mother, would she be able to help around the house. Check with your wife to see what Mom can do to help her. Start simple. Does Mom cook, are there any favorite but simple meals she can get ready to help your wife?
Having an extra person in the house full time day after day can throw the balance off in a household. It will take time. Include your Mom in fun family activities that she would be able to do.