You must feel really torn.......trying to make a choice between family members is so hard. I am so sorry that this is happening to you, your sister and the rest of the family. I think that I would do as you did and let them work out how they were going to attend the family gatherings. If that doesn't work, I guess I would plan on having one set for one holiday and the other for the next one...I hope this helps. Is your sister getting any therapy? I hope so. Pat