I get on swimmingly with my youngest daughter & her family. We holiday together, do things together and live 5 minutes apart.
Middle daughter lives in Oz. We all get on swimmingly too despite the distance and her husband is a saint when I stay for 6 weeks (but I do iron his shirts beautifully ⭐️).
Eldest daughter is different. She has always been insular and tended towards jealousy of her sisters, even now they are adult. We get on very well when her husband is not present and her teenagers are a delight. She is a different person as soon as he is on the scene. He is definitely the catalyst for the discomfort we all (including the rest of the family) feel. Very sad but so long as she is happy with him then so am I, but I’m not sure she is. 😢