Do you think Dale’s dad, mother, or sister know that they have a granddaughter/niece?

I just realized that since he has a strained relationship with all his family members because he’s a miserable pos that they probably don’t even know they have a grandchild/ niece.

It’s fucked up cause I recall rose saying their daughter has asked about where her father was, now she won’t know the other side of her family cause of him.