DC is 2.5 and is under investigation for SEN. Recently they wont speak to one of their grandparents (nothing has happened between them). Grandparent has now cancelled upcoming visit as says no point coming if DC is going to cry when they see them. We were all due to go to Spain next year and that is also being cancelled. They are done with DC and dont wont to know them anymore as they say DC is being rude. AIBU if I go no contact with grandparent because of how they are treating DC? Family say I am because they are saying DC caused it. I am honestly baffled as they are adults in their late 60s and DC is 2.5!