Help! My DD is in the middle of her GCSEs. They finish next week. The very next day is my sister's wedding - but my DD is refusing to attend. She says she doesn't believe in gay marriage anyway (I do - I don't know where she gets this opinion from), and she wants to go out celebrating the end of exams with her friends instead. I am not close to my sister - not through want of trying on my part, but I really would like us all to be there at the wedding as a family. And it would be especially noted and I would no doubt get a lot of flak from the wider family if my DD did not attend the wedding. As she is in the middle of her exams I don't want to stress her about this but its a real quandary - what comes first? Loyalty to my sister? Or respecting my DD's needs/views on this? It is a pretty important family social obligation she has known about for a long time. Maybe she needs to learn the art of compromise to keep the peace? I don't see how I can force her to attend against her wishes other than some form of inducement...any advice appreciated.