Terrence Antonio James

FRIENDS FOR LIFE: Sabrina Chahir, who received a marrow transplant in 2011, meets her donor, Maximilian Eule, left, a German who came in from Austria to meet her, at a restaurant in Illinois earlier this month.

Sabrina Chahir was waiting to meet the man who helped send her cancer into remission.

The 8-year-old girl from the United States, who likes art and takes piano lessons, knew he had flown across an ocean to see her, nearly four years after he donated his stem cells to help rid her blood of cancer that could have taken her life.

Recently Sabrina and Maximilian Eule, 30, had their first face-to-face meeting at a celebration in suburban Schaumburg, Illinois with Sabrina's friends and family.

The two had emailed and video-chatted. But Sabrina's mother, Natalia Wehr, said it was important to her to meet Eule in person.

"It's your daughter, and this person we don't know did something so wonderful," Wehr said. "You need to know who that is."

SABRINA'S STORY - DIAGNOSED AT TWO

Sabrina was diagnosed with acute lymphoblastic leukemia, one of the most common types of cancer in children, when she was 2. The cancer cells were in more than 80 percent of her blood.

The girl's cancer had gone into remission before, but she soon relapsed. After rounds of treatment and infections that caused Sabrina to go blind temporarily, doctors at Lurie Children's Hospital of Chicago told Sabrina's family she would need a stem cell transplant.

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Eight-year-old girl meets her stem cell donor