What should I do if I have a troublemaker's sister at home who can't live well and won't let others live well? She is always preparing for divorce at her husband's house, and she will divorce for more

What should I do if I have a troublemaker's sister at home who can't live well and won't let others live well? She is always preparing for divorce at her husband's house, and she will divorce for more than half a year. It's a headache to meet such a girl. Let's find a suitable time to ask her out and have a good communication. Let her vent all her grievances and minor and important troubles. When she is calm, tell her not to be too self-centered, help her analyze that her so-called big events are nothing, tell her that her parents are old and you are pregnant, and let her bear her ups and downs. Also, she usually wants to establish her own hobbies, and people are cheerful when they are in a good mood. I don't know the specific reason, but I hope it will be useful to you. Be mentally prepared before communicating, because you are pregnant.