I know things are busy/chaotic rn, so if handwaving is good enough to count this, then that's fine with me. If you think it's better to thread, though, I'm super down for taggies. Sorry if that isn't helpful, I just want to make it easier for you.

I don't think she would try to do it FOR him (unless he asked, then absolutely). She'd angle it as a friendly introduction, a cordial conversation with the host, maybe compliment him on the party and ask casually about his interest in necromancy but otherwise not verbally get too into his business. If he starts to act cranky, she'll politely try to bow out.

She'd be hoping that she can secretly glean info/visions using her clairvoyance about his rivalry or any hidden purpose related to current or recent goings-on, for her to share with the group. Like maybe a conversation behind closed doors, a feeling he has, a thought he had, something dramatic that happened or Will Happen.

Vanessa can definitely skip faking it, right to making it, but I wasn't sure if that would be too much too early. If successful, it wouldn't be something he should be able to sense unless he's also got the skill. If he can sense it or is just annoyed and gets pissed at her, I am OK with whatever consequences that entails.