Police say the stabbing suspect fled the scene afterward but was later tracked down and arrested.
Police and medics responded to the scene, in the 8200 block of 5th Avenue West, at about 1:45 a.m. after receiving reports of an altercation and stabbing, said Sgt. Ryan Dalberg of the Everett police.
Arriving at the scene, officers found a 22-year-old man with serious stab wounds and the woman providing CPR. The victim later died of his injuries.
The stabbing suspect had fled the scene, so officers began tracking him with a police dog. He was found soon after about two blocks away and taken into custody, Dahlberg said.
The woman, Bobbie Dickerson, later told KOMO News in an emotional interview that the incident began with a domestic fight between her and her boyfriend, who lives with her.
She said they were arguing because her boyfriend had been gone all night. As they argued, the 22-year-old man - who is the boyfriend of Dickerson's daughter - walked into the room.
She said the 22-year-old was trying to calm them and stop the argument when her boyfriend started to lunge at her, and the 22-year-old stepped in to protect her.
She says her boyfriend then turned on the 22-year-old victim, and less than two minutes later he was lying on the floor in a pool of blood.
"He just had this blank look on his face and, and he never said a word. More words were passed, and then he started stabbing," she says.
Through her tears, she says the young man probably saved her life.
"He jumped in the middle of it to say, 'Hey, don't do that. What are you doing?' ... I did all I could to save him - and he's laying on my floor still - still right now he's laying on my floor, in my house."
"As hard as it is to say, he's not suffering any more, he's not bleeding any more ... he's in a better place now," Dickerson says. "It happened really quick in a matter of not even a minute or two. I don't understand - why? Why would somebody do that to their friend? This is your friend. Why? Why? That's my only question is - why?"