If I may, I'd like to move this down a generation.
My oldest, Katie, is almost 23 (in Jan). She obviously knows I have had mixed race babies. She saw me preg, she saw what I brought home. She asked and told her when she was old enough. She never seemed to care who fathered the baby. It was just baby brother baby sis to her.
If she loved and married a blk guy and had his babies, I'd have no issues accept the shock of being a grandmother.
I'd really, really REALLY like her to be married before she has *******. However, if she finds herself being a single mom, I won't love her or my grand baby one bit less.
Being a single mom now has zero stigma attached to it. I like her to be in a relationship (ideally married). I'd hate for her to say "I just wanted to be a mom and found a guy and didn't tell him." I really hope I raised her better than that but only time will tell how well I did.