D.M.
Unforunately we can't control others (although it would be nice...) but we can control how we react to them. You Dad sounds like he knows your Mom and what she's like. Spend the time with your Dad and your daughter. He'll see what he already knows - you are a good mother. Then your Mom's calls and attempts to get to you though him won't work. Focus on your daughter and your family as hard as it is, because you know they are ones that deserve your attention and love. Don't waste it on those who don't deserve it.