I really sympathize with you and your two daughters… I am also the daughter of a divorced family and have one, and only one sister…
All my life, I have been shlepping around to other people’s sedarim. Yes, even before my parents were divorced (my mother couldn’t stand my father’s sedarim… so we shlepped around). I understand that it is no easy feat being everybody’s “kol dichfin”…
I don’t think I would mind doing a seder by myself (or with my sister), but for society sake, and established norms, and by the law of “It’s Just Not Done…” I drag myself along- to aunts and uncles, grandparents, 3rd cousins-seven-times-remove, well-meaning rabbis and rebbetzins…