A chance encounter outside the Jewish Children’s Museum in Brooklyn, N.Y., led to a tearful reunion between a Holocaust survivor living in Dayton, Ohio, and the French woman whose family provided her shelter and a new life in the United States.

According to Rabbi Saadya Notik, who has traveled the globe as a Chabad-Lubavitch rabbinical student, the embrace last week between Cherie Rosenstein and Monique Valbot couldn’t have happened without some Internet savvy and a bit of Divine Providence. Notik’s French-speaking study partner, Rabbi Levy Goldberg, happened to be at the intersection of Kingston Avenue and Eastern Parkway – home to Lubavitch World Headquarters on the one side and the popular museum on the other – when he overheard Valbot and a friend conversing in French.

Goldberg walked over to say “Bonjour!”

Valbot revealed in the ensuing conversation that her family had adopted a Jewish orphan after World War II. In 1947, after finding an American Jewish family to take the five-year-old orphan in, Valbot’s mother accompanied the girl, whom they called Cherie, to the United States, bleaching the girl’s hair to match Valbot’s passport. But soon after, the families lost touch.

Two years ago, Valbot Googled her childhood name of Bohne and came across an article Rosenstein had written about her wartime experiences in the Dayton Jewish Observer. Valbot, however, mistakenly told Goldberg that she lived in Daytona, Fla., and asked him for help in finding her long lost friend.

Goldberg related the story to Notik, who with a few keystrokes on his computer, dug up the Dayton article. In it, Rosenstein, who was born Maria Helena Chuchnowicz, details how she came to the United States as Monique Bohne.

“Today, I have many questions,” she wrote in her essay. “How did I get separated from my natural parents? Did they entrust me to strangers to ensure my survival? How did I get to the orphanage? Are there brothers and sisters or other relatives?

“Where are Mrs. Bohne-Hene, Monique, Catherine and the children of the orphanage today?” she further asked. “I know I must find out the answers.”

Convinced that Cherie Rosenstein had to be girl whom Valbot’s passport allowed a new life in America, Notik took to Facebook to send messages to Rosenstein and her son.

Last week, Goldberg invited Valbot to a café, called Rosenstein and handed his guest the phone.

The two women decided they had to meet, and were reunited at Dayton’s international airport.

“You shared your room with me,” Rosenstein told Valbot at the airport, according to the Dayton Daily News.

Reached in New York, Goldberg, who lost most of his own ancestors in the Holocaust, said that the feeling of participating in something so extraordinary was humbling.

Notik agreed.

“One chance encounter and a Brooklyn bonjour has begun to unravel years of wonder,” he mused.

“I am so happy to have played a part in this,” added Goldberg. “Pieces from a terrible tragedy are getting put back together.”