Mom was diagnosed with Parkinson's Disease 10 year ago. How can I get her to take a nap in the afternoon?

By the afternoon, my mom's feeling more anxiety and stress. She was diagnosed with Parkinson's Disease 10 year ago. How can I get her to try to relax? She already takes Prozac (40mg) and refuses to take a nap. When I try to get her to rest, she starts rearranging her closet, or rearranging her dresser drawers. She refuses to rest, can anyone give me some ideas that would help me?