The New Sheldon episode was extremely challenging for Missy Star Raegan Revord

Some of the best episodes of “Young Sheldon” are more painful than funnyand Raegan Revord, who plays Missy Cooper on The Big Bang Theory, understands that sentiment better than anyone—literally. In Season 6's “A Stolen Truck and Going on the Lam,” Missy steals a truck and goes on the road because she's mad at her parents, leading to an entertaining plot about teenage angst. Filming the Mission Road adventure wasn't fun for Revord, however, as she got into a car accident before filming that day.

Revord detailed her experience Instagram account, revealing that a drunk driver hit the vehicle she and her mother were driving to the set. While the “Young Sheldon” star appreciated the irony of the road collision before filming this particular episode, she noted that the experience had an effect on her. In her own words:

“I had full blown panic attacks and PTSD for weeks after the accident and the only way I got through it was the most loving and supportive cast and crew. They checked in with me and never once made me feel like finishing the shoot was a priority, that my welfare came first.”

Revord has since described the experience and how it affected him, explaining that it shook him deeply. And luckily, she got through the ordeal with the help of her “Young Sheldon” co-star.

“A Stolen Truck and Going on the Lam” see “Young Sheldon” character Paige Swanson (McKenna Grace) accompany Missy Cooper on her road adventure. The sitcom characters are good friends, but McKenna Grace turned out to be an even better friend to Raegan Revord behind the scenes.

“She was in my trailer holding me and I was crying my heart out,” Revord said. ET while reflecting on the traumatic experience. “It was nice to have a really good friend there to just help you through something traumatic.”

Revord also recalled having a panic attack after the crash, forcing her to call her dad to come get her because she felt safer traveling home in his truck. Fortunately, the experience didn't affect her confidence in returning to the set long-term, as she played Missy on “Young Sheldon” until the sitcom aired its final episode. Additionally, Revord has since returned to the franchise as an irregular Cast member of Georgie and Mandy's First Marriageso the audience can look forward to more Mission performances.