[Mikaela's reaction is a little bit funny, admittedly, and Ren's smile curls upwards slightly. He does at least have the decency to restrain outright laughing, but he looks decidedly amused at this point.]

Did you think I'd quiver at the first hint of a threat? [...Well, he might quiver in certain circumstances, but probably not the type of quiver Mikaela was going for.] Sorry to disappoint you. I'm just excited to see the kinds of things people here are capable of. Even cute vampires like you.

[He tilts his hand and curves a few of his fingers so there's just two left pointing out Ren's own canines, indicating the basis for that guess. There are probably other things with pointy teeth around here, but then, he'd been about to start talking about someone's blood.]