How does hybridizing occults work?

DrearyMaeI've never had a spell caster breed with a werewolf before, but I've had a dormant wolf breed with a vampire and a mermaid breed with a spellcaster. The dormant wolf and vampire had twins: one vampire and one vamwolf. The vamwolf was to all appearances an ordinary werewolf child to begin with, aside from the fact that he was immediately hated by both vampires and werewolves. When he aged up to teen he developed more vampire elements. He had three forms, one human, one vampire and one werewolf. The werewolf form was not editable in CAS, and was badly deformed when he turned into it. The vampire form couldn't be summoned on command. His needs panel had a combination of werewolf and vampire elements that, taken together, were hard to read. Poor kid was cursed. Eventually, he took the vampire cure and was turned into an ordinary werewolf. He married a human and had an ordinary werewolf child. 

The the mermaid and the spellcaster had a merboy with a spellcaster bloodline. I won't call him a mercaster, because he was a typical merboy with no spellcaster abilities. The spellcaster bloodline was just sitting there in his psychology panel doing nothing. It's possible that it gives him the ability to have spellcaster children without a spellcaster partner. He's currently grown up and engaged to a human. I'll let you know what happens if they have a child.

As for triplets, I haven't found occults to be particularly prone to having multis. The dormant wolf in the first couple had the Fertile trait. So you'll have to do something (possibly cheaty?) to make it happen.