The thing you can trust about their motives is that it's all about them. I don't think they know how to be "friend" esp. with us. They all seem to spout the same stuff there, but they don't talk etc. and if a stranger was in my place, I know my H would be SOOOO much more gracious and kind than he's been with me.
If you need to not see her today, don't. You have an agreement about visitation and she needs to honor it.