Cardenas was wading in the water with her family and friends in Ingleside when she went under. She died on Tuesday.
Her family released a photo from her first day of school. She's hugging an employee at Fremont Intermediate School in Fremont Elementary District 79. School administrators say she was a kind-hearted child who loved making friends.
A visitation and memorial service will be held in Libertyville on Tuesday, September 3. Pink balloons will be released in the child's memory, school officials said.