The "Real Housewives of Beverly Hills" star asked to be connected with her late grandmother during their session, which was filmed inside her West Hollywood restaurant, Pump.
"She acknowledges that she was waiting for you before we even got here today," Tyler told her in the preview clip from Wednesday's episode. "And she acknowledges that she knows she's been talked to, asked to be around, like come through. There's a whole feeling of like, I was with you before you came today."
Vanderpump revealed she had been trying to reach her grandmother since her death 10 years ago, but has never seen any "evidence" of a connection.
According to Henry, Lisa shouldn't be on the lookout for signs.
"It's like, if she's gonna communicate to you, you're just gonna know or feel what she would've done," said the medium. "And that's more of the way that she seems to connect." Henry also acknowledged that kind of connection can be "frustrating."
His advice: "I think if you really are open enough, you will feel her essence coming through."