We have different opinions because we all have different family dynamics. This is not a one size fits all solution issue. @conmama should read all the opinions and see where her family relationships fit in our expressed advice.
Within our immediate family there is very little drama. Three sibs get along quite well (well, not “perfect”) and it would be rare for their to be angst. Doesn’t mean there is never misunderstanding. We are big on communication and words and in OUR family, I think we’d lean towards a comment or two of we had this situation.