I think the 2nd line is a little too extreme, but otherwise I think crimsontactics just takes what you say as it is. I know ur style of interaction is to say what is in your mind, other ppl buay song, not much can be done. And I think that will probably offend ppl but at the same time, you're not too bothered by it.
It's important to be genuine but sometimes need to hold back a bit.
You know that she doesn't like to talk with filter. Precisely for that reason, you cannot view what she say as serious or intentionally belittling you. Sometimes, ppl pass comments/judgements without fully thinking through their thoughts.
It is up to you to discern whether they are genuinely hating on you or just commenting, etc. Even if you feel she is genuinely hating on you, it's important to control ur emotions.
Try to calm down and process things through. I have experienced a lot of such situations in the past and times like this just make me want to prove the other person wrong through my actions. To be a better person in the long run. To be a better person also means you should try to let it go, considering you're older than her. Don't let this incident dampen ur ego/confidence, edmw after all just tcss. Some ppl you can gum with, some you can't. Life goes on.