My sister in law and I are both in relationships with two brothers from the same family. They are engaged and we are in a long term relationship. Unfortunately we live several hours away from one another, they have been invited to spend Christmas with our partners family. Her partner would like to come but she refuses as her nephew will be experiencing Christmas for the first time with her family. They have not spent Christmas with our partners family in 6 years and instead have spent it with her family. This is one of many times my sister in law has refused to engage with the family and put hers before our partners. I know this is upsetting my partners parents and I find this really upsetting on behalf of my partners parents and my partner as it feels like a big 'get lost' from her. Particularly as my in laws have said they will pay for them to visit. Am I being unreasonable ? Should I say something ?