Have you ever met someone who refuses to throw diapers away right away?

I don’t see how this can be normal. I love my aunt but I’m getting annoyed. When she comes to my house to see my daughters, she changes their diapers for me sometimes. But she NEVER throws them away. I’ve found poopy diapers in corners days after she’s came over because she’s too lazy to just walk over to the trash and throw them away. She has left some in my daughter’s crib countless times as well. I even found one in her diaper bag. I’m getting disgusted and no matter how many times I tell her, she never throws them out. Has anyone else went through something similar? Is this normal and am I overreacting?