My 3 1/2 year old basically tried to smother Nate. I was making dinner and my back was turned and Nate was on his play mat. Allie had been on the couch watching TV. I turn around and there she was wrapping a blanket around him and pressing it over his face!! I ran over there, ripped the blanket off of him (it had only been a second so he was fine), then I put DD into her room. I only let her out to eat dinner, go to the bathroom and brush her teeth. And then I put her to bed an hour early. She said he was cold and that's why she put the blanket on him. A few days ago, she tried to put this tiny little toy in his mouth because she was pretending to be the dentist. Luckily, I was holding him so I could stop her right away. We talk ALL the time about how we never put anything on the baby's face!!!! I know she is little, but I feel like she should know better. I told her I loved her, but I was really really upset. I wasn't sure how to handle it, because I know she didn't mean to hurt him, but what she did was really dangerous. I never leave them alone in the same room together, but I guess now I can't even turn my back to make dinner!