The victim's husband, Kenneth Manzanares, has been charged with murder in connection with Kristy's death.
The incident occurred around 9 p.m. Tuesday.
According to an FBI agent involved in an investigation of the case, a witness entered the cabin Kenneth and Kristy were staying in and observed Kenneth Manzanares with blood on his hands and clothing.
“She would not stop laughing at me,” Kenneth Manzanares told the witness, according to a search warrant affidavit.
A security officer aboard the cruise ship handcuffed Kenneth Manzanares and detained him in an adjoining cabin, the affidavit said.
“My life is over,” Kenneth Manzanares spontaneously told investigators as he was being searched for physical evidence, according to the affidavit.
The Princess Cruise ship, Emerald Princess, was in the middle of a seven-day Alaskan cruise, but after the incident it was diverted and docked in Juneau.
Passengers tell Fox 13 it was around 9 o'clock Tuesday when they heard a group of people fighting.
Shortly after, screams echoed through the hallways of the Emerald Princess. Then the captain's voice boomed over the intercom.
“He was very worked up, he said, 'Everyone, we need all medical, security, all personnel to deck 9 and deck 14'; and that scared me because I'm on deck 14,” said Megan Morr, a passenger on the Emerald Princess.
Passengers say they heard two men and a woman fighting on their balcony, an argument they say then continued on in the hallway.
“People were running through the hall with blood all over them and trying to get security,” Morr said.
Passengers say they didn't know the 39-year-old Utah woman was dead in a room. All they saw was a man trying to jump off the ship.