Mahe and his wife, Sunny, announced daughter Elsie's death Tuesday on social media.
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The announcement says the girl had two neurological exams and both tested positive for brain death. It says she died Tuesday evening.
A family spokesman confirmed the girl's death on Twitter.
6:03— Reno Mahe (@RenoMahe) November 30, 2016
Our Elsie girl has officially been released to heaven - at least from a worldly, paperwork? https://t.co/06lcRkOWSQ
The accident happened in the Mahes' Utah home on Nov. 22.
The Mahes say they worked to have Elsie's organs donated.
Reno Mahe played five seasons in the NFL for the Eagles from 2003 to 2007. He coaches running backs at BYU.