repeatedly predicted would kill her and make it look like she died in an accident, her sister testified Friday.
Doman also recalled how the law ignored her family after Savio actually did die in what appeared to be an accident.
"No one would listen," she said.
"I tried to call (the state police) and no one would listen," Doman said, "All they would say is, 'It's under investigation.'"
While testifying, Doman drew the ire of , who he believed was mocking him.
Burmila responded several times to objections over testimony about Savio's death certificate by saying, "The document speaks for itself."
The courtroom—including defense attorney —erupted
with laughter after Doman answered a question about the death certificate by parroting Burmila's words.
"I'm glad eveyone thinks that's funny," Burmila sneered before turning on Doman and saying, "Ma'am, do not mock the court again or try to in the future."
Soon after that episode, the incessant coughing of a sick juror prompted Burmila to call it quits for the day. He said he didn't want the other jurors to get infected with whatever the ill one had.
Before the early end of Friday's session, Doman spoke of her family gathering in Savio's house the day after she was found drowned in her dry bathtub in March 2004.
While they were in the house, Peterson showed up outside, pounding on the front door and shouting for them to open up.
Doman said she didn't want to let Peterson in, but her uncle opened the door for him.
Peterson then grabbed a laundry basket and said he needed to get clothes and other things for his two sons, Doman said.
Peterson went to the bedrooms of his sons, but also into Savio's bedroom and the bathroom where her body was found.
"He was frantic, quite frantic, like in a hurry," Doman said, telling how she followed him into the bathroom.
"He was leaning over the bathtub, rubbing it," she said. "You could see he was rubbing and I asked him what he was doing. He said he was cleaning. He didn't want the kids to see the blood.
"It didn't make sense to me," Doman said. "Why was their blood in the tub if she drowned?"
Doman also said that shortly before her sister died, Savio let her know she stashed a secret suitcase in the back of her SUV. She said Savio instructed her to immediately get it if anything happened to her.
Doman did grab the briefcase the day after Savio's body was found. But instead of doing anything with it, she stored it in her garage and did not even check out its contents for an undetermined amount of time, possibly years.
Defense attorney Joseph "Shark" Lopez also revealed during cross examination that, before turning the briefcase and its contents over to the police, Doman provided copies of the paperwork inside to a producer from Greta Van Susteren's talk show. Doman gave the papers to the producer shortly after Peterson's next wife, , vanished in October 2007.
Lopez also questioned Doman about her relationship with Savio's two sons, Kristopher and Thomas. Along with getting the briefcase, Doman said the other most important thing Savio wanted her to do if she died was to take care of her sons.
Lopez got her to admit she never again saw either boy after her sister's funeral. She also never sent either nephew a birthday or Christmas card.
After the hearing, Pam Bosco expressed her frustration with Burmila's decision to keep out so much evidence during the trial's first week. She said prosecutors "are doing what they're capable of with their hands tied behind their backs. They're walking on glass."
Read More: Drew Peterson Coverage on Patch