The funny thing about the term afro-dominican is that their are no other terms for Dominican.
Mostly all Dominicans are 80% African an 30% spanish/native indian.
There are plenty of Dominicans that don't look remotely "Afro" in phenotype, just check out the DR parade in NYC for example. The average Dominican is less than 40% African based on most autosomal genetic tests. And it's even lower in the Central Cibao region. The term Afro-Dominican is useful to differentiate that black girl in the OP with Dominicans that are on the lighter end of the spectrum like this:

a lot of these dudes are just idiots. 
