Anderson-Hill died near Summit Road in the Heathcote Valley, between Sunday and the early hours of Monday morning.
Her death was initially being treated as "unexplained" while police tried to piece together a timeline of her movements.
Tributes are pouring in for Anderson-Hill.
A Facebook group has been set-up for friends and family to share memories of the woman.
It has been inundated with messages since its creation.
"I will always miss you. You were that funny, free spirited, friend I always adored and when we were together we just clicked," one post said.
"Still really don't know what to say. Thank you for being a beautiful part of our lives, you won't be forgotten," another said.
Anderson-Hill's body was located by a member of the public near the Cattlestop Crag.