Yep, two weeks ago dd had another girl tell her that she wasn't good enough for her skates.
Wait a minute. Let me get my big girl boots on.
I don't know why parents don't train their kids to deal with bullying. It's not hard. It will take 15 minutes now. If you wait and the bullying gets to the point where she's sobbing and doesn't want to skate, there's pretty much nothing you can do.
Step 1: Teach your daughter the following phrase to say when a KID makes a nasty comment. She is to NEVER say it to an adult.
"I don't care what you think." Then she is to skate away a few feet.
Bully: Your boots are too good for you.
Kid" I don't Care What you Think.
Bully: Your costume is ugly.
Kid: I don't care what you think
BullY: I heard Coach wonderful say you were the worst skater ever.
Kid: I don't care what she thinks,
Then spend 15 minutes having her think of the awful things kids might say and TRAIN her to reflexively say that comment or variations back.
It's important for her to come up with suggestions of what mean girls say. That's part of the exercise. Getting her to PHYSICALLY repeat the 'don't care' comment back to when you make the snarky comments is important.
Stage 2: She wants to be in the big girl/talented skater group.
Who doesn't?
You have to tell her that some people are just mean. There's nothing you or she can do to fix them. But craft the lesson so she realizes that the mean girls aren't a group she wants to join.
Then teach her how to do an eyeroll when the mean girls cut her off, or are rude, Man, I love eyerolls.
This is the advice of a woman who was bullied from age 7 through about 25. Rather, let's say, people attempted to bully me. But nobody ever did it twice. Now all I have is memories of cutting bullies off at the knees. Good times, good times.