she transparent

For context, this is our party’s first campaign. An NPC has asked for our help getting into a mansion that was thought to be haunted, and all three of our party members have suspicions that the NPC is a ghost herself. 

Me (monk dwarf, Drybadd): Can I roll an arcana or religion check to see if I sense any ghostly energies about her?

DM: I mean, I guess? 

Me: *rolls 16 with modifiers*

DM: You see that she looks vaguely transparent around her ankles and feet, but it’s too dark to see much else. She seems human aside from that. 

Druid: Why the feet? 

Me: Drybadd has a foot fetish.