OMG I found mustache hairs in the sink I think my sister is right about Hitler haunting us - help me?

My sister has been convinced Hitler is in the plumbing haunting us and she won't leave the house, she takes only baths not showers so she can plug up the hole and now she has chains on the toilet. I did a "spell" I made up with her tonight in hopes it would make her feel better but it didn't work because the toilet lid opened and we heard a guy speaking German. Now I dared to go back in the bathroom and I found a bunch of mustache hairs and they are a medium brown shade and everyone in my family has black hair (we're asian) so where did they come from?