@help541 Wow, I watched this whole discussion develop, and I'm ready to say it out loud. This person is being an emotional bully. Putting you down (head pats & snide remarks), "mothering" and refusing to stop in spite of being asked and told - that's bullying. When it is so bad even teammates notice it - that's bullying.

She is not your friend, and you already told her the consequence of her action, so by stopping associating with her isn't ghosting, it's keeping your word.

I suggest if she continues, that you enlist a teacher, coach or counselor to have a conversation with the 2 of you and emphasize why you are cutting ties. She will be unhappy and she may try to retaliate so with a trusted adult, you need to have a plan to protect yourself. You don't need to handle it alone.