Police are looking into a link between bizarre, ranting YouTube videos and Facebook postings and a woman accused of killing a random victim in western New York.

Holly Colino, who a relative said was severely mentally ill, is charged with shooting a woman in the head Friday as she sat in her pickup truck on a lunch break in Brockport, a village on the Erie Canal. Police identified the victim as Megan Dix, 33, of Lyndonville.

Colino, 31, was arrested Monday in nearby Henrietta after police responded to a report that a woman pointed a gun at someone in a restaurant parking lot.

In a YouTube video, a woman who identified herself as Holly M. Colino accused strangers of stealing her identity by imitating her hair, eyebrows and lips.

"It's like accomplicing murder, using someone else to go murder somebody," she said in the recording.

In another video, she accused a former employee of the state College at Brockport of being "so envious and jealous of me she wanted my contacts."

In a number of videos, she recorded herself a car in parking lots, pointing out women and saying they're mimicking her hair or eyebrows. In one video, she yelled incoherently about someone damaging her vehicle and stealing bank statements, "onlookers calling the police," ''dead bodies," being alone and living outside.

A Facebook page for Holly M. Colino is filled with long stream-of-consciousness rants and links to several of the YouTube videos.

Colino was from the Rochester area but had been living in Arizona recently, police said.

One of her cousins, Todd Colino, of Tempe, Arizona, told the Rochester Democrat and Chronicle he found angry graffiti from her in Phoenix and believed her mental illness was worsening. He told the newspaper in a telephone interview Tuesday that the graffiti, which accused "women who imitate" Holly Colino of being "sex offenders," led him to fear she was going to hurt somebody or be hurt.

He said family members had tried to get Holly to seek help for her apparent psychiatric issues but she refused.

Another cousin, Audra Colino, told the newspaper Holly had lived with her and her father for a while but was asked to leave when her personality grew dark and angry.

"She started having this weird perception of me and it kind of made it scary and my dad kicked her out," she said.

In recent years, Holly Colino lived in her car and elsewhere, Todd Colino said.

Colino pleaded not guilty at her arraignment Tuesday and was jailed without bail. She's due back in court Friday. Her public defender, Joshua Stubbe, didn't return a call seeking comment.