YESSSSS!!! I would love to do something with El and Dani!! I know Dani is only 5 years older than El, but we could totally pull something off to get these two together and build some kind of relationship if not the usual Sirius taking care of HP thing.
If Owen and Sebastian know each other, then I think that's an easy connection to say that Dani would know him too. And if Olive ever frequents the bars downtown then there's a chance the could meet too.