Nina Previti told the Asbury Park Press her 14-year-old daughter, Francesca, was recently treated by a doctor who found her breathing to be substandard.
Schools Superintendent David Trethaway says the Manchester High School sophomore collapsed on the school track Thursday.
The two-time national cheerleading champ was pronounced dead at a hospital. Authorities believe she apparently went into cardiac arrest.
The cause of death is still pending an autopsy and toxicology report.
Grief counselors were at the school Friday.
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Information from: Asbury Park Press, http://www.app.com
