Authorities have found the body of a missing Pennsylvania teen who vanished from a party after feuding with a friend.

The search for Cassidy Derr ended Tuesday evening when the 17-year-old’s body was discovered in a remote area on Locust Mountain, The Morning Call reported.

Derr, who had Type 1 diabetes, was reported missing after she left early Sunday morning alone from the party in a wooded area near Tuscarora.

Her family said she brought her insulin pump, but didn’t know how much insulin she had with her.

Before she went missing, the teen texted a friend that she was lost and her phone was dying. For three days, search crews looked for Derr near where her phone last had signal.

“It is my understanding that the 17-year-old left a party on ‘the mountain’ and that they found her in a pit,” Schuylkill County Coroner David Moylan II told The Morning Call.

Friends took to social media Tuesday to remember the 17-year-old as an “amazing girl.”

“Always smiling, having a good time, and I knew I could always talk to you,” friend Bethany Moore wrote on Facebook.