Mom's hiding bizarre and grotesque things in her room in empty med bottles and I am freaky out. Any advice?

When I asked her why she is saving her nail clippings and sputum in different bottles, she replied Oh we'll go ahead and throw them out if you want. One day I thought I saw her even playing with them or examining them. This is really weird. So I threw out everything and sanitized her room. I know that she has never displayed this behavior before except that her hygiene habits are getting really bad lately. I accommodate her bathroom with wet wipes, germ x and rubbing alcohol but she will refuse to use them until I go in with her and scrub her down. I am afraid she will get my husband and I sick from her getting into the fridge and food without washing her hands. BTW she also has MRSA, which makes my husband cringe every time she gets into the pantry.
She knows from being a retired RN for 40 yrs that she must practice good hygiene, but now this saving dirty used tissues, used q-tips, anything that comes off or out of her body is scaring me.