BRIDGEPORT, Conn. (CBSNewYork) – More charges in the case of missing Connecticut mother Jennifer Dulos.

Michelle Troconis, the girlfriend of Dulos’ estranged husband, turned herself in to police Thursday afternoon to face new charges of evidence tampering.

The arrest of Troconis comes a day after Fotis Dulos was arrested at his home, also charged for a second time with evidence tampering.

Police have yet to find Jennifer Dulos’ body, but the arrest warrant paints a clearer picture of what police believe happened to her.

Web Extra: Read The Full Arrest Warrant (.pdf)

Michelle Troconis had nothing to say as she entered the State Police barracks in Bridgeport. One day earlier, her boyfriend Fotis Dulos left with a smile on his face, despite being arrested again in connection with his wife’s disappearance.

Prosecutors allege he and Troconis tampered with evidence. He’s free on $500,000 bond.

“It’s an exhausting fight. I love my children. That’s about it,” he said.

“We’ve plead not guilty to the pending charges. We intend to plead not guilty to these charges,” said defense attorney Norm Pattis.

The latest arrest warrant gives a clearer picture of what investigators believe happened on the day Jennifer Dulos disappeared.

A home surveillance camera captured the last known photo of Jennifer Dulos. She’s seen walking up to her home at 8:05 a.m. the morning she disappeared.

Police say at the time “[Fotis] Dulos is believe to have been lying in wait at 69 Welles Lane for his wife to return home.”

The warrant details how a “bloodlike substance” was found in a truck Dulos had access to the day his wife vanished.

Five days later, investigators say Dulos had the vehicle cleaned.

State Police asked Dulos’ girlfriend why the truck was washed.

“You showed me the picture of the blood in the door. It’s because the body of Jennifer at some point wa sin there,” she allegedly replied.

Police say they found blood stains and spatter in the garage of the home, leading State Police to believe Jennifer Dulos was the victim of a “serious physical assault.”

In the warrant, police wrote “the crime and the cleanup are believed to have occurred between 8:05 a.m. and 10:25 a.m.”

That’s when surveillance images show Jennifer Dulos’ SUV leaving the home. Police believe her husband was driving it with her body inside.

“There’s not much here that we hadn’t heard before, and I question the wisdom of these charges at this late date. The requirement to make another bond seems simply a stunt on this case, part to wear down our will to resist,” Pattis said.

According to the warrant, Fotis Dulos and his girlfriend wrote what police referred to as “alibi scripts.” They were allegedly notes to help them remember what they were doing at specific times on the day Jennifer Dulos disappeared.

Police say much of the information was proven to be false.