"If you could give one piece of advice to other kids, what would it be?"
"If someone is bullying you, and you bully them back, then that makes you a bully."
No, it does not.
When you respond in kind to someone treating you shitty, that’s standing up for yourself. There’s no reason why one should ever feel bad and guilty for doing so and it makes me a little sad, that this girl was taught this mentality.