Being high keeps you from seeing ghosts? I don’t remember any adults mentioning that or the Fauns.
But you can just tell me and I’ll use my abilities. No big deal. Usually Nico does the scaring, but…he’s not here. I can probably talk to Dad, too. He’s Hades. He might have some influence. He’s not my dad-dad (from a different world) but he’s usually good for helping.