after reading through all the comments it seems clear that she does in fact need some kind of help. the things that lead me to this conclusion are this
1) she is in fact half laotion, but refuses to acknowledge it and does not want it acknowledged by others.
2) you state that she does not have issues with her mother(laotion) and is in fact on good terms with her family, but rather with her (white) father whom raised her and fetishizes asian women, yet it is her mother she scorns.
i can't imagine that this attitude is anything but hurtful to her mother and her mothers side of the family. the way you describe her father he sounds like a creep and a d-bag. so now not only does her mother have whatever hurts were inflicted by being the fetish object of this guy, but her own daughter hates who she is because of him. again, this is all based on the comments you have made about it, so if im off about it let me know.
honestly, i think the best thing she could do would be to get into the other side of her family and learn about that culture and those people(her family) in a healthy way.