Sandra Boss asked her ex-husband, Clark Rockefeller, to return their daughter, Reigh Boss, who goes by the nickname "Snooks." In the video, released by the Boston Police Department, Boss told Rockefeller that there must be a better way to deal with their differences.
"We both love her dearly and have only her best interests and well-being at heart," Boss said. "I ask you now, please, please bring Snooks back. There has to be a better way for us to solve our differences than this way."
Boss also addressed her daughter.
"I love you, I miss you so much. And remember you're always a princess," Boss said.
Rockefeller, 48, and his daughter were last seen at Grand Central Terminal in New York on Sunday night, just hours after he was accused of snatching his daughter during a supervised visit in Boston.
Boss' YouTube plea to Clark comes hours after reports that he may have changed his and Reigh's appearance while on the run, Kate Merrill of WBZ reported on CBS' The Early Show. He may have dyed his hair an orangey red and cut Reigh's hair to look like a boy.
Police initially suspected that Rockefeller was trying to flee to Bermuda or Peru on a yacht docked in Long Island. But now authorities suspect that Rockefeller may have planted false clues to throw investigators off his trail.
Officials have been trying to sort through a wave of tips. Investigators have followed up on reports that Reigh was seen on a bus in Brooklyn and a highway in Delaware. So far, police say none of those reports panned out.
The couple divorced last year. Rockefeller's visit with his daughter Sunday in Boston was the first time he had seen the girl since a new visitation order was approved several months ago. Reigh lives in London with her mother, a senior partner in the London office of the management consulting firm McKinsey & Co.
During their 12-year marriage, the couple lived in Boston and also had a home in Cornish, N.H.