awwww... It's tough to help a parent when they didn't fill their life with avocational activities of their own... this is especially common for mothers who stayed home from working to raise the children, and poured all their energy into what the children wanted or needed to do..and when the children are gone??? They have nothing to enjoy on their own.

Try and get your mom involved with a group or some volunteering... to help her recreate a life for herself. She'll still need you but won't be so "needy."