This struck me as odd. They introduce her with a line about history and what not, and I thought to myself "Oh yes, this will come in handy later on when they need to find a secret train tunnel underground, or there's something in the hotel from the old days that only Patty picks up on." You know. To utilize that trope. As far as I know it didn't happen. Which leaves that aspect of her character feeling like a very very lazy "See? She's not a scientist and not terribly useful to the Ghostbusters at all because we've decided our black character can't be a scientist in 2016, but this skill is why she's invaluable!"
Just make Leslie Jones a fucking scientist.