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Selena Gomez's mom, Mandy Teefey, speaks about the singer's kidney transplant. Pictured: Gomez attends #BoF500 gala dinner during New York Fashion Week Spring/Summer 2018 at Public Hotel on Sept. 9, 2017 in New York City. Getty Images/Dia Dipasupil

Selena Gomez's mom shared her thoughts about her daughter's kidney transplant.

Last week, the "It Ain't Me" singer had a kidney transplant as part of her treatment for lupus. Gomez announced her operation on Instagram when she shared a photo of her and her best friend, Francia Raisa, lying on a hospital bed while holding hands.

On Sunday, Gomez's mother, Mandy Teefey, also shared the same photo on Instagram and expressed her thoughts about her daughter's surgery . "This picture is one of the most breathtaking images that will live with me forever," Teefey wrote. "For all those moments of not knowing if we were going up or going down, I can always come back to this picture and know we can always make it back up. "

Teefey added that as a mother, she felt "helpless" and "scared." All she did was pray for the two girls and Raisa's family. "I was able to keep my little girl, but I also gained another daughter," Teefey added. "Thank you to everyone who was there for Sel, Francia and our families. We survived from all the love, prayers and God."

In Gomez's post on Instagram, she admitted that she was laying low for part of the summer. In fact, she did not promote her new music. She learned that she needed to get a kidney transplant due to Lupus and it was necessary as well for her overall health. In the lengthy caption, the "Bad Liar" singer thanked Raisa for her support.

"And finally, there aren't words to describe how I can possibly thank my beautiful friend Francia Raisa," Gomez wrote. " She gave me the ultimate gift and sacrifice by donating her kidney to me. I am incredibly blessed. I love you so much sis. "

Gomez was diagnosed with lupus in 2016. Earlier this year, she donated money for lupus research to the University of Southern California's Keck School of Medicine. "I continue to be optimistic about the progress being made in lupus research and am proud to support the promising work at Keck School of Medicine," Gomez said. "I am hopeful for the millions of us around the world that may benefit from this."

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