so what is she then?

[lololink]

And as a new playable race, it is unlikely that she will be a member of a beast tribe, since no beastmen have ever been playable.

That depends, beast tribes are mostly all the races that aren't one of the 5 races, so in a way it will be a beast race, but since this race will be accepted in all the city-states then it's not really a beast race.