my clean freak mom is driving me crazy

does anybody elses mom stress over the fact that your house is a mess??? My mom and I are close but shes driving me crazy. She asks all the time if I cleaned my house. She offers to do it for me. She offers to hold the baby while I clean. She OBSESSES over the fact that our kids are probably breathing in germs if we dont throw out our trash. She cleans the bathroom everytime she goes in. Our house is considered pretty clean too..One time she came over and stormed out angry because she said my house was messy. I never ask her over anymore. Is this normal?