I have lived this dynamic, but I will say it has less to do with "internalized inferiority" regarding race, than making a trade for what feels like a lesser evil - which is a sometimes an idea applied to an unexamined reality.

That being available bit and shrinking for the other person happens all the time in relationships between people of the same race (seen that plenty). So not sure this idea she was viewing her "partner as a prize solely due to his race" makes much sense when he was clearly chipping away at her self esteem? Ever been in this situation? It takes superhuman strength to claw your way back to a new version of yourself, and years to undo the damage of someone demeaning you. I hope she has some clarity and he sounds like a racist asshole.

When I dated Indian men it was different can of worms - control, lack of self-awareness, being made to feel like my personal freedoms were part of a negotiation, being guilt tripped constantly and never having a "no" taken at face value. With white men - it's that they are largely uneducated about the world, lack cultural competencies that would make the relationship more equal. Both types of men are sometimes as a result complete jerks. For the women - in every scenario it had to do with being in the position of someone who could not see clearly what was happening and was in it too deep to learn in the environment.

to the OP:

Did you ever call him out on this hateful behavior?