'I Don't Know If He's Killing Me': Victim Of Marlboro Attack Said She Had To Fight Back

MARLBORO (CBS) - The woman who says she was attacked on a Marlboro walking path was able to fight off the suspect and record video of him running away from the scene.

Ana Paula Nasciemento doesn't know if the suspect followed her or popped out of the woods along the Assabet River Rail Trail Monday morning. She says she tried to come back on Tuesday for her daily walk, but had to go home because she's so scared.

"I was just thinking about, I die," Nasciemento said. "I don't know if he's killing me. If not that's my only chance to try. I have to do something for myself."

She was out for her daily walk Monday morning when she says a stranger grabbed her from behind, knocked her to the ground and tried to sexually assault her.

"I screamed and he just said 'don't scream, don't scream. Why are you scream?' And he's pushing me and I'm pushing him. But you feel like you're nothing," Nasciemento said.

She got away and because she already had her phone's camera open to take pictures along her walk, she hit record quickly. Once police released the video, the suspect was arrested in hours.

Jonathan Parker, 35, faced a judge Tuesday, charged with assault and battery and assault to rape.

"He was grabbing at her leggings at what she believed was an attempt to remove them and sexually assault her," said Middlesex County Assistant District Attorney Ben Woolf.

Prosecutors says the 40-year-old woman was pulled from behind and thrown to the ground.

"She indicated to the police that he told her to shut up and he struck her in the face several times," said Woolf.

Nasciemento is now worried she will have to testify. "I don't want to see him," she said. "I don't want to see him."

Parker is in jail -- but she's still scared, despite hundreds of people online commenting on her bravery escaping the attack.

"I don't know, I don't feel like that because I was just thinking about my life and I think, don't know if he's killing me or if not or if I am OK," she said.

People who use the trail are glad an arrest was made and hope it's an isolated incident.

"I commend her, sounds like she did all the right things and my heart goes out to her," said Richard Allen of Marlboro.

"Courage, I heard that she fought him off that she managed to get a picture of him so that helped," said Per Gyllstrom.

"Never in my life thought something like this would happen," said Lena Gyllstrom.

Parker will be held in jail until a dangerousness hearing on Friday.

WBZ-TV's Mike LaCrosse and Kristina Rex contributed to this report.