If it was a family member that called the cops on the relative, I don't think I would ever speak to them again. Also, does the law allow
The “red flag” protective orders are officially known as emergency risk protection orders, and may be sought by family members, police or others to temporarily prohibit people’s access to firearms when they show signs that they are a danger to themselves or others. The law took effect Oct. 1.
It looks like they had a lot of people living in that house, but I am curious if the sister lived at that residence. Does that qualify as a "family member". Of course, I am not sure if the courts there would care if it was some stranger. They might still issue the protective order.