Kitty | Derek
It absolutely is, though I bet you were an adorable 10 year old.
I would wait and see if this resolves itself maybe. She asked me if I "know" your mother, not if I "knew" her, so that may not be something you want to tell her about.
A strange guy she doesn't know? That makes sense. Even if this wasn't happening, you're welcome to stay here if you like.