Cover of "The Perfect Date" with the evil Sharon Noles (in her Rosha Nolan persona) pictured
Sharon Noles aka Rosha Nolan was the main villainess of "The Perfect Date", book #37 of R.L. Stine's original Fear Street series (published on April 1, 1996).
She was the girlfriend of protagonist Brady Karlin and, a year prior the book's events, Brady convinced her to sled down a steep hill with him. But during the ride, Sharon lost control and crashed through a thorn brush, killing her and leaving her beautiful face torn to shreds. Vengeful and blaming Brady for her untimely demise, Sharon returned from the dead by possessing the body of a beautiful girl, leaving her in a hideously scarred body. Sharon then returned to Shadyside and ran into Brady in a pizza restaurant. Brady is instantly drawn to Sharon and he strikes up a conversation with her, and she adopts the name Rosha Nolan (an anagram of her real name).
She and Brady begin a relationship, despite Brady currently dating classmate Allie Stoner. But over the course of the book, Sharon made numerous attempts to harm/kill Brady, including spilling hot coffee on his hand and crashing his car after a movie date. All throughout, the deformed girl whose body Sharon took over began following Brady, trying to warn him about Sharon's evil plan. After the car accident, Brady managed to track down Sharon to St. Ann's, a private school near Shadyside where she claimed to attend school. Once he found her, she briefly pretended to be angry before forgiving him. But later on, while at Brady's house, Sharon made another attempt on her boyfriend's life by stabbing him with a letter opener, while setting it up to look accidental. When Allie arrived and saw the scene, Sharon had her help get Brady to the hospital before revealing her relationship to Brady, causing her to dump Brady.
After Brady was released from the hospital, his best friend Jon Davis called him, saying he had talked with the scarred girl following him and that he'd given him information about "Rosha" he needed to hear. But before Brady could arrive, the evil Sharon killed Jon by crushing his throat with a marble candlestick. Later on, Sharon called Brady and invited him to go sledding with her at the hill where she had died, where she revealed her true identity to Brady, as well as declaring how stupid Brady was for not figuring it out.
Sharon then began to strangle Brady to death, but was stopped when the scarred girl arrived to reclaim her body. But instead, the two engaged in a fight that ended with them both literally tearing each to pieces, sending their severed body parts tumbling down the hill.
The epilogue, however, revealed Sharon had indeed succeeded in killing Brady, who only later realized he was now a ghost himself.