She was found at Manor Park in Aldershot, and police are urging her mum to come forward to get help.
Tributes To Schoolgirl Found Dead In Fordingbridge
A Fordingbridge school's paying tribute to a 15-year-old girl - found dead on Sunday.
The Burgate School says Ashli Blake was 'delightful, caring and mature'.
Her body was found at a monument near Rockbourne. It's not known how she died but police say it's not suspicious.
A statement from The Burgate School said:
"We are shocked and saddened to hear the tragic news that one of our Year 11 students has died.
"Ashli Blake was an absolutely delightful, caring and mature young lady. She was working hard at school and was very well regarded and respected by staff and students alike.
"The school is pulling together as a community and supporting each other. Our thoughts and prayers go out to Ashli’s family at this most difficult time."
A Hampshire Constabulary spokesman said:
"We can confirm police received a call during the early hours of Sunday morning (21 September) about the death of a 15 year old girl.
"Her body was found near the Sir Eyre Coote monument in Fordingbridge by a member of the public.
"Detectives are not treating the death as suspicious.
"We're in the process of contacting next-of-kin and completing formal identification.
"A file for HM Coroner is being prepared."
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