Mother in law

Help! My mother in law is a 70 year old woman who is hyperactive, not treated, not medicated and it’s a complete nightmare. She is not evil and she means well. But dealing with her is a lot. She bothers everyone wanting everyone to be “as active” as she is, she has no personal space boundaries, she modifies stuff she doesn’t like from my house, and plenty more. Any advice on how to deal with a hyperactive person who is not self aware? Thank you