Say nothing, do nothing, keep well out of it. If you don't it could cause arguments between your DD and Sil. I don't know if you have DGC but if you were to get involved you could lose access to them so leave it to your daughter to see you if she arranges it but do not contact her or SiL. Let them make the pace and no matter how you feel bite your tongue and say nothing as if you do you could lose out the most. I know it must be hard but try to focus on your own life at the moment.
Times article claim that Waspi women are tone deaf and should read the room



