Let me guess Bella is Gabriel and Uriel's daughter. It's so obvious

I thought so too, but also why is Bella a demon? Aren't Gabriel and Uriel both angels?

Idk it was mentioned that the contractor or something that holds that power are neutral being and they can be an angel or a demon so maybe bella was just born demon even tho both parents are angels

But it says they cannot produce babies like humans. They just come into existence??