After the divorce, my former mother-in-law harassed my relatives by texting and calling every day, and slandered my reputation everywhere.

I told you the same thing, and I met love rat's mother-in-law. This kind of person can't stand it. If you scold her for coming back, you can scold her. Anyway, I'm afraid I'll break my face if I get divorced. People like your ex-mother-in-law, who bully others and need to be beaten, also reflect her inner confidence. Then you can poke her soft spot and see how long she can last. This kind of thing is not cost-effective, the cost is too high, and it won't help much. You should think it over.