It has now been 10 nights since your advice of staying in the room with her while she is in her cot, waiting till she is asleep before leaving. There has been about 4 bad nights but no vomiting. That is 10 nights of no vomiting and now asleep within minutes! I am hoping this trend continues. We are now using some of the professional sleep training tools (music and darkness) alongside your advice (staying in room until asleep) to ensure she feels safe. I also added something you wrote in one of your advice columns which is when she wakes go immediately and comfort her so she knows I'm there and will come immediately when she needs me.