Please use IRAC form (argue side of how florence is responsible for stephens injuries) of the case below.

Florence and Michael were married and had worked together in the Acri Caf, which they had jointly managed. For the first 15 years of their marriage, Michael had been in and out of hospitals for the treatment of mental disorders. Although he had beaten Florence when they had marital problems, he had not attacked anyone else. Last year, Michael and Florence separated, and Michael fully controlled the day-to-day management of the Caf. A few months after Michael and Florences separation, Stephen and his friend John went to the Acri Caf. Without provocation, Michael shot and killed John and seriously injured Stephen while they were seated and drinking at the Caf. Stephen wants to sue Michael and Florence for his injuries. Is Florence responsible for Stephens injuries?