PORTLAND, Ore. -- A Portland mother missing since March sought a restraining order against her husband in 2006, KGW has learned.

Heather Mallory, 32, petitioned the court for a restraining order against Brian Cole in October 2006. In the petition obtained by KGW, Mallory told the court she feared for her safety.

"Brian is a ticking time bomb with loads of anger festering inside him,” write Mallory. “I cannot trust him to be around me or my son right now."

In the same petition, Mallory says Cole punched her in the breast, leaving her bruised and in great pain.

The restraining order was granted, but four days later Mallory filed for a dismissal, writing: "Brian needs to see his son... So I can work nights and days without paying so much for childcare. If Brian cannot see him, I cannot afford to live."

That was in October of 2006. Mallory disappeared in March. Mallory’s parents now wonder if their daughter is still alive.

Parents plead for help

In a plea for help, Steve and Jenni Mallory appeared at a press conference where a $5,000 dollar reward was announced for information leading to a resolution in the case.

"It's terribly frustrating," her father, Steve Mallory said. "For me personally, I'm crying several times a day."

"It's like wearing a lead jacket all the time," Heather's mother, Jeni added. "It's very heavy. I go to bed feeling very heavy."

Mallory was last seen arguing with her husband before leaving their apartment on the morning of March 8th.

Police say they found her red sedan two weeks later, but no sign of Mallory.

Her parents say they asked Brian Cole to stay home from Friday's news conference, and when asked how they felt about him, Heather’s father had this to say:

"There's a lot of potential people who could have caused harm to Heather...he (Brian Cole) is certainly a suspect like other people are at this point."

Police have made it very clear that they haven't named any suspects in this case. KGW tried to reach Brian Cole repeatedly on Friday evening, both at his apartment and by phone, but received no response.

$6,000 in total reward money

A $5,000 reward was announced during the news conference. Heather had worked at the University Club in Portland, and the company raised the money for the reward. Added to a previous reward of $1,000 offered by the police department, the new amount brought the total reward to $6,000.

Husband made public plea

Heather and Brian have a young son named River and family members said they didn't believe she would intentionally leave without him.

Days after her disappearance, Brian made a plea on television for her return.

"I just want her to come home," he said. "We have a beautiful little boy at home that wants to see her."

Friends last saw Heather on March 7

The last day friends reported seeing Heather was on Friday, March 7. She attended school and worked her entire shift. After work, she spent the night socializing with friends and arrived home about 7:30 a.m. the next day, police said.

“After she arrived home, she became involved in an argument with her husband. Heather reportedly left home to avoid further confrontation and has not been seen or heard from since,” said Sgt. Brian Schamutz, spokesman for the Portland Police Bureau.

Investigators also said Heather's credit card has not been used since the day she disappeared.

Heather stands 5’5” and weighs 120 pounds. Anyone with information on her whereabouts is asked to call 9-1-1 or 503-823-0446.

 Background: More details about Heather's disappearance

(KGW reporter Mike Benner also contributed to this article.)