Today, I let my sister hold my newborn daughter for the first time. I heard her mutter under her breath, "I could kill you so easily..." FML
So just to clear things up, my sister isn't super crazy, although I was naturally alarmed. She's a little weird and creepy, and has no filter.
Also, this happened a while ago (I had to say today, obviously), it just popped in my head the other day when the same sister told me she's pregnant. She has babysat, and has a step son as well.