Metting a killer, and befriending that killer

Harley has a pretty dark past; including an abusive mother. Life was fine other than that, until a certain killer comes enters her life. Jeff and her are both 16 at the time, and they become great friends,(this is after Jeff turns into a killer!)Until one day, when Jeff disappears. 2 years later, still no sign of Jeff, but Harley has not given up hope, and has lost her sanity waiting, she has killed her abusive mother, and many more. When Jeff returns, she almost kills him, but doesn't, remembering him and the year they spend together before he went missing. Does Jeff the infamous killer, remember Harley the Great?(that is her cp name!)