Police have confirmed that the body found in woodland near Hatfield on Sunday is that of 19-year-old Amelia Arnold.
The post mortem also confirmed that Amelia died as a result of head injuries.
Amelia's boyfriend, 22-year-old Jack Wall from Hadrians Walk in Stevenage, has been charged with murder.
Joseph Potter, 41, from Bletchley has also been charged with perverting the course of justice.
A man has appeared before magistrates in connection with the murder of a teenager in Hertfordshire.
Police investigating a suspected murder in Stevenage have found the body of a woman they believe to be 19-year-old Amelia Arnold.
Hertfordshire Police investigate suspected murder of teen