Have you ever thought about a SET SCHEDULE? It doesn't seem like you have one. Please correct me if I am wrong but it seems like you allow W a “come when you want” philosophy? If that’s the case, you might want to consider getting into a routine. It’s good for daughter and yourself. All this “come and go” stuff doesn't seem right. Kids also really like structure. Getting a “routine” in place can be beneficial. I know you have your daughter most of the time but does your daughter know the days she’s with mom or is it hit and miss?
