They will be a fucking riot! A demon attacking a vampire even if he is half dragon, for no reason? I'm pretty sure that everyone will hear about it. And you can bet that Logan will be pissed that Billie's [i]boyfriend[/i] attacked him, while he is civil and keeps Devin away.

He'd smirk a little bit. "What? I said I was glad you were alright too."

AWENOWIFEELBADFORYELLINGATCLARY! 

Logan would feel horrible for yelling at her even if he was worried and pull her into a tight hug.