If you're with a partner or spouse who isn't your children's parent, would you expect their family to treat your children from a previous relationship the same as other children in the family who are related to them?
I.e. same presents at Christmas, same interest in their hobbies, schooling, lives in general, same offers of childcare ect.
Not specified which side of this I'm on as wanted unbiased opinions if possible.
YABU - No its fine for them to treat children related to them differently to children who are not.
YANBU - Yes I would expect it.