Anonymous wrote:OP here
Thank heavens I have a daughter as well, which lessens my frustration in having a close relationship with my sons GF. I simply want him to be happy and welcome in his GF family, so the GF family being non reciprocal makes me sad.
Its more important for two of them to be happy with each other than their families. If its matter to them, they'll find a way to get more or less involved with one or the other or both families. You need to offer what you can and avoid judging or criticizing her family.