Roselle and Jerome Martinez's late daughter, Reagan, and her sisters, Taylor and Peyton, went everywhere together as a family. They said Reagan was the joy in the family's life.
Reagan and her family received a custom-made doll, personally designed by Roselle's former college roommate. Unfortunately, Reagan, who lived with cerebral palsy, epilepsy and polymicrogyria, died in December 2020.
Recently, the family took a trip to Hawaii and somewhere along the plane ride, the doll was left behind.
WATCH: Full interview with family begging for help finding daughter's missing doll
"We were delayed getting off the plane, and I sat my stuff back down. When they told us it was time to depart the plane, I guess I didn't grab the doll," Roselle said. "I walked out and didn't know until I was in the hotel room."
The family noticed the doll was missing after their daughter Peyton was going to buy a dress for her in their hotel in Hawaii.
"(Peyton) mentioned she wanted to buy a Hawaiian dress for the doll, for Reagan, while we were there and that's when we realized the doll was missing," Jerome said.
To the family, the doll served as a memory of Reagan, and to keep their late daughter with them. It's a doll they said would go everywhere they went.
"I know it's just a doll, but it's much more than that to us," Jerome said. "It's part of her memory."
The doll is named "Rae-Rae," after their daughter and it has that name stitched on the bottom of it.
"I'm just reminded of her with that doll, and her holding it, and her playing with it. It was made to look like her," Roselle said.
Roselle posted a plea to Facebook to help find the doll on Tuesday. Since then, she's received many messages from people encouraging her to keep looking for the doll. She says flight attendants and workers from airports all over the country are looking for the doll.
The family sat in row 29 on June 20 on United Airlines Flight 411 that left John Wayne Airport near Los Angeles, CA to Daniel K. Inouye International Airport in Honolulu, HI, Roselle explained.