The family of missing Colorado mom Kelsey Berreth is suing her fiance, Patrick Frazee, on the grounds of alleged wrongful death, ABC News reports. In filing the lawsuit, Berreth’s parents are publicly acknowledging what police said on Dec. 21, that she is thought to be dead. Berreth has been missing since Thanksgiving Day, when she was at a Safeway grocery store with her 1-year-old daughter. Frazee claims Berreth dropped the girl off with him, and that she then left. Frazee on Dec. 31 was hit with two counts of first-degree murder, and three counts of solicitation to commit murder, relating to Berreth’s disappearance. “Upon information and belief, Frazee committed and/or collaborated to commit the murder of Kelsey Berreth. This action seeks damages against Frazee for his actions to murder and/or collaboration to murder Kelsey Berreth,” the Colorado federal court lawsuit alleges. The civil claim also alleges that Frazee “enacted physical, mental, and emotional acts of violence upon Kelsey Berreth prior to her death,” ABC News notes.