Summers went missing in 2007 when she was 15 years old. She was last seen in the same area where Berry, DeJesus and Knight were found Monday.
Linda Summers, Ashley's grandmother, said she wants residents to be vigilant when out and about.
"Keep your eyes out for Ashley, even some of the other missing children out there. It just takes one phone call anonymously to help these children come home to their families where they belong," said Summers.
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