J.J.
My 3 year old daughter used to do this. It lasted for a few months. Now she still sometimes wakes up in the middle of the night, but she calls for me to come into her room, she doesn't even want to be in our bed anymore. In my opinion it was fine that she was coming into our bed in the middle of the night as long as she wasn't starting out there. I think it is just a phase and she will outgrow it.