An autopsy has been ordered but there were no signs of foul play. It was unclear who found Stocco and called police, The Dallas Morning News reported.
Her death happened three weeks before the first anniversary of the drowning deaths of 3-year-old Marcus Stocco and his 1-year-old sister Catherine Stocco on July 8.
Authorities say Matthew Stocco, their father, told them he found the children at the bottom of the pool but couldn't revive them.
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