Their baby would be mixed race, probably light skinned black depending on how strong his/her daddy's genes are. This is the most peculiar question and i would think that this would be common sense. It's not like lucky dip, the child would have genes from both parents. I hope even more that the color of the babies skin is of absolutely no significance to the mom, because babies are human beings and not handbags and shoes.
I think the child is more likly to be white then black. My friend is half black and her daughters father was white and they have a very pretty, very white baby girl.
Does it matter? If it does then maybe he isn't the one for her. The chances are the same regardless of how much "black" he is. Could be very light... could be white... could be very dark. My friend is white and has a black husband.. their child looks hispanic.
These kind of questions make me really hate people. The baby wont be black. It will be a quad. Meaning 3/4 white, 1/4 black. No one can tell what the skin color will be, but the average quad has a white skin color. What does it even matter if she loves him?