Both of ours slept in our bed from day one. We tried the crate for about 30 minutes, but the crying definately got to us! Hobbs is now 1 year old and 3.5lbs and Hootie is 5 months and 2.5lbs and we've never rolled over on either of them, despite my hubby being convinced that he would one day. I think it is a combination of our instinct and the fact that these little ones get out of the way that prevents us from rolling over on them. If you DO happen to roll over on her, she will wiggle, you will feel it, and you will move. So, don't worry! Of the 11,000 members here, most of which let their yorkies sleep in bed with them, I've never heard of anyone injuring their yorkie by rolling over on it.