My friend thinks I made a hate group about her!?

It's unfortunate that Sue's mother is so immature. In an ideal situation, what should happen is that you, Yasmin, and Sue sit down in a circle with your (supposedly) grown up parents and perhaps a teacher to mediate, and you get it all out. You talk about why the group was created and what Sue did to hurt your feelings to induce Yasmin to make such a group. You talk about how you think that made Sue feel and how you would feel if you were in her shoes. You talk and talk until you are talked out and then you forgive each other. Good luck finding any mature adults to help you with this. Look up Native Sentencing Circles and Restorative Justice. Show the information to Sue's mother (and yours). Hopefully she'll act mature enough to deal with it.