I mean... It's actually impossible to be Latino without Euro blood. Since that appearance is basically a result of inbreeding between europe's latin countries (Portugal, Spain, Italy in their immigration phase) with the indigenous population of the colonies and a little bit of african imported during slavery.
Anyway, for some reason i always thought Bella had some latin descent, but not exactly as a latina, but maybe one of her parents was from one of the countries i said above, but in my case was more because of her looks. Something in her isn't very northern european.