A New Milford woman has been arrested on sexual assault charges for an alleged relationship with a 15-year old boy. Danbury Police arrested 34-year-old Krystal Jones on Tuesday at the Quality Inn on Federal Road. The investigation was launched at the end of March into a complaint from the state Department of Children and Families that a juvenile was involved in a sexual relationship with Jones. She was charged with 4 counts of risk of injury to a child and 3 counts each of illegal sexual contact with a victim under age 16 and sexual assault.