This is pretty much the long and short of it, IMO. You'll find the occasional one that will, but that's like unicorn status and even then she'll never marry one. Many of their families have an issue with them messing with white men, let alone nikkas.
And if she does, she's essentially walked away from her folks and all of her family to do so, which is why it rarely if ever happens.
Maybe as time goes on, attitudes will ease and/or people who harbor such negative opinions about blacks will subside but that's going to be a long time because even young people are racist as fukk nowadays.