The girl in Birthright was half Klingon, half Romulan.
Ziyal was half Cardassian, half Bajoran. And so was that baby in Covenant.
I can't think of any other characters who are two alien races without one of those races being human. We have K'elyhr, Troi, Naomi Wildman, Spock.
Why no half Romulan half Betazoid? Half Ferengi half Klingon? Half Vulcan half Pakled? Why do all the aliens always want to get with us and never with each other?
And why is it in pretty much every science fiction show, monstrous looking aliens find human looking women attractive? Jabba should have found Leia repulsive, and he should be lusting after slug women.