“It was rough,” she recalls expressionlessly.

LeRoy isn’t hungover. In fact, she wasn’t even among the roughly 20,000 ready-to-rage fans at the day-glo fiesta in Somerset. The emergency physician was working overnights at a nearby hospital to ensure concertgoers who partied too hard got the care they needed.

“They put me out there for a reason,” says LeRoy, who specializes in toxicology. “Friday and Saturday it was nonstop, people on different drugs.”

LeRoy had just finished her third straight 12-hour shift. It was the second straight year the Regions Hospital toxicology fellow was stationed at Westfields Hospital, about 10 minutes from Somerset Amphitheater, during Summer Set. With thousands of young fans, many of whom are on weekend molly missions, the small-town hospital sees a spike in drug-related cases.

While Sunday night was relatively tame, LeRoy says she saw eight people within her first two hours on the job Friday. The partied-out patients ranged from 17 to 30 years old. Some were drunk and simply needed a safe place to sleep it off, but molly — the popular party drug also known as MDMA or ecstasy — was the most prevalent. When drugged out fans appeared “really agitated” or were a danger to themselves, they often landed at Westfields or another larger hospital in the area.

“A couple of them were running around assaulting people, causing trouble, with something we call excited delirium,” LeRoy says. “A lot of drugs that really amp you up can cause that syndrome. It’s a high-risk, high-morbidity syndrome that people can get from certain drugs.”

Although privacy laws prevent LeRoy from talking too many specifics, she says festival goers arrived at Westfields in various conditions. While some were ready to keep the party going, others needed breathing tubes or were subdued by ketamine administered by EMS staff at the festival to calm them down.

“A couple of them were high on LSD or acid,” LeRoy says, noting an uptick in acid cases this year. “They were really scared and couldn’t talk, so I gave them a safe place to be and watched them for a while.”

While Summer Set 2015 kept her about as busy as last year, other Westfields staffers tell her they saw even more action in its earlier years. Onsite EMS tents with doctors who are able to treat and release some fans on the spot cut down on hospital trips, LeRoy says.

Festival security has also gotten tighter over Summer Set’s four years. As LeRoy was heading into work Friday, cops with drug dogs aggressively scoured a long first-day line filled with nervous faces. The coke-nosing canines killed more than a few buzzes, as some fans’ stashes were confiscated before they got in.

Last weekend’s broiling temperatures didn’t make life any easier. LeRoy saw a few heat-related illnesses, and she says hotter temps aren’t kind to hard-dancing molly users.

“One of the big problems with molly is that you have so much muscle activation that your body makes a lot of heat,” she says. “So, if it’s unable to release that heat into the environment because the environment is so hot, then your body is going to get even hotter. That’s how people die a lot of the time when they do molly, by hyperthermia.”

Fortunately, none of her patients paid for their party with their lives.

“I was worried going into it that we would have some worse outcomes, but everyone did really well,” she says.

That’s one thing LeRoy won’t have keeping her awake tonight.