A Rochester woman accused of setting a fire that killed four of her children has pleaded guilty to felony counts of manslaughter, assualt and arson. 31-year old Bobbie Kugler entered the plea in Monroe County Court this morning. She entered the plea in exchange for prosecutors dropping four murder counts. Kugler faces seven to 15 years in prison. She admitted she started the blaze in her Grape Street home last February by burning pictures of her boyfriend and tossing them onto a dresser that was filled with combustible materials. Four of her children, ages 6 to 14, died in the fire.