While the semi-absentee father doesn't "get a vote," he is right to render advice; he is her father, after all.
For the past hundred years (and probably forever) rational people have recognized that the more people have in common, the more likely it is that they will have a successful marriage. Arranged marriages in every culture reinforce this principle. Every computer dating service is founded on that exact principle. And like it or not, a Black person and a white person have a figurative gulf of different experiences that can never be completely bridged. To say that "It is only the color of their skin" is ridiculous and oblivious to reality.
It is too soon to tell how the recent flood of "mixed" marriages will pan out in the long run - hell, most marriages end in divorce anyway. But the production of bi-racial kids, and their acceptance by both families and society is a significant consideration that must not be ignored.
There are some understandable reasons to seek out a mate from another race, but that doesn't make those reasons rational or promising of a successful long-term relationship. There is much more involved here than, "Is he a nice guy?"
True enough.
But a shared culture is more important than a shared race.
Half my family is black and the rest is white and hispanic with one or 2 asians mixed in. But we are all overwhelmingly, blue-collar working class gulf coasters from Texas and Louisiana.
We eat the same foods, we put hot sauce on everything, listen to (mostly) the same music, work in and around the same industries, etc.
We drive the same kind of trucks, the younger members of the tribe race (and build) the same kinds of cars, and the bikers among us all lean toward cruisers.
Most of the tribe even smokes the same weed, and we all like the same kinds of guns, lol.
And most of our marriages work. Our record ain't perfect, but we're beating the national average.