(CNN) -- A 25-year-old woman from Seattle, Washington, has become the fifth person to die from burns suffered when her fiance's uncle invited them to his house in Puerto Rico and allegedly set them afire.
According to a website set up by friends of the couple, Kate Donahue, 25, died Thursday at Jackson Memorial Burn Center at the University of Miami, in Florida, where she and her fiance had been flown for treatment. Her fiance, Jesus Sanchez, died earlier in the week.
Donahue worked at Group Health in Seattle; Sanchez was an engineer at Boeing.
"They are very much in love," Donahue's mother, Michelle, told reporters when they were first hospitalized. "Their last words before they were intubated were for each other. She loves him, he loves her and the last six months have been the happiest time of her life and the most important thing is love".
The couple had traveled to Puerto Rico so that Sanchez could introduce Donahue to his relatives.
"I got a text from her on New Year's Eve telling me 'Happy New Year' and what a wonderful time she was having," Patrice Moore told a reporter about her niece, Donahue. "And that was the last thing I heard from her".
The next day, Donahue and Sanchez were among 13 dinner guests at the house that Justino Sanchez Diaz shared with his parents and sister in the town of Florida, in north-central Puerto Rico, police said.
But the 45-year-old unemployed furniture mover had prepared for the party by soaking the walls of his house with kerosene and placing kerosene containers in each corner of the dining room, according to Sgt. Frank Perez of the Arecibo Region Police Department's homicide unit.
At about 4:30 p.m, the suspect set fire to the room and the people in it, Perez said. "There was no opportunity for anybody".
Nearly all of those who died suffered burns over 80 percent of their bodies, he said. CNN