Is my brother justified in cautioning her?

[Unic0rn]

My brother’s intended wife talked shit about my mom with her father’s potential stepmother. My mom heard about the disrespect and told her dad what his daughter did since they were friends. Her dad called her and told her to apologize to my mom, she called my mom only to tell her that it was her dad that called her and told her to make the apology. My mom told my brother and he called his fiancée livid and cautioned her for what she did. She said that my brother is supposed to have protected her against his mother she gloated to my brother that she was a no nonsense person and some people actually call her a witch which she is and she went ahead to report my brother and mother to her brother. Is my brother justified in cautioning her?

[OlderAndWiser]

Way too much drama in this story. Why are you in the middle of this?

[Unic0rn]

It’s my brother he keeps calling me to tell me what his fiancé does. I have told him to leave her but he doesn’t listen. I am just tired of hearing this but I still love my brother

[OlderAndWiser]

Tell your brother you don't want to hear about all the drama.

[Sevenpointfive]

what shit did she say?

[Unic0rn]

My mom came to visit her and her stepmom being way younger than her did not greet her (it’s a big deal to greet your elders where I come from) and she asked her why she didn’t greet her and she decided to gossip and make fun of my mom to my sister in law who my mom did nothing to

[Sevenpointfive]

so they didn't bow?