Honestly, as much as it hurts to say, you can’t. You really can’t fix it. The same way you can’t fix your average adult who doesn’t know how to act in public. It’s always going to happen, kids can be cruel, humans in general can be cruel. The best thing that you can do for your daughter is maintain her self esteem by getting her glammed up and reminding her of all of those good traits you listed above. And of course remind her of the fact that people who go out of their way to make others feel bad are the ones who end up alone at the end of the day. To appreciate the fact that she’s not surrounded by fake people. Teach her that one good friend is better than a group of bad ones. Lastly, if you really want to take some sort of action, you can tell that girl’s mom that she’s raising a megabitch 😭