WOODSTOCK, Vt. (AP) – A Vermont woman has been charged with trying to set a home on fire last week, and police are looking into whether she is responsible for a series of unsolved arsons in Vermont and New Hampshire that began during the summer.

Cheryle Potwin, 49, of Sharon, is undergoing psychiatric tests after a Woodstock man caught her starting fires in his house on Friday, police said. Police say she told them she was in the Plainfield, N.H., area on Friday, around the time the home of Grafton Family Court Judge Ellen Arnold burned down. She also told police she suffers from a multiple personality disorder.

Since July, suspicious fires have leveled a multimillion dollar home that was under renovation, a small camp, a storage trailer, a mobile home, a historic house and other structures.

Potwin came to the attention of police Friday morning after a 911 call from Woodstock resident Rory Kilcullen. He reported he heard a woman enter his house through an unlocked door and yell, “Hello!” several times, followed by the sounds of someone rummaging in his kitchen and then a flickering light and the smell of smoke.

Kilcullen said he confronted the woman, identified as Potwin, grabbed her arm, and asked her what she was doing, to which she replied, “I’m sick.”

At that point, Kilcullen said he noticed there was a fire on his stove and he released the woman so he could call 911. According to police, Potwin slipped out a side door but Kilcullen followed her with his phone and read her license plate off to the dispatcher as she drove away.

A second fire that had been started on a living room cushion with a lighter.

Another unexplained fire Friday morning heavily damaged the basement of a home in Hartland, killing several pets.