But it turns out the movie was just too funny for her to hold it together.

“I’m the worst at not laughing when you’re not supposed to,” Chabert toldPeople.

“So there were many a take that I accidentally ruined because I broke and laughed.”

Lacey Chabert smiling on the red carpet for a Hallmark Channel event

For Russell Hainline, the movie’s writer, it was important for it to have both.

Lacey Chabert posing in front of a Hot Frosty promo