LOMA LINDA (CBSLA.com) — A Chino teenager in desperate need of a new heart was undergoing heart transplant surgery Sunday night at Loma Linda Medical Center.

Sixteen-year-old Lexi Anderson, a sophomore at Chino Hills High School, has been hospitalized since last month when her condition took a turn for the worse.

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“The most important thing is our daughter’s alive,” Lexi’s father Todd Anderson told CBS2 Sunday night.

“We are feeling overjoyed, this is a day that’s been long coming,” he added.

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Her health battle received a great deal of attention last month when her classmate, Lamello Ball, scored 92 points in a high school game Feb. 7 and dedicated his performance to her.

“We really believe the times of prayer is what has gotten our daughter through so much,” Todd Anderson said.

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“I think she’s going to be blown away,” Lexi’s mother Irene Anderson said about the incredible support the family has received through the ordeal.