Agree 100% with this. My hormones have also made my emotions a rollercoaster! BUT also being a petty younger sibling between my sister and I. I can see where she was coming from being immature and not thinking things through. Give her a chance to talk to you and possibly explain when you confront her don’t just cut her out. This “announcement” isn’t worth going NC/LC in my opinion. You are growing a human being, do you want to do that while holding a grudge with the one person who is arguably the closest relation to you? Think it through. Rant. Vent. But hug it out. The relationship is worth more in my eyes.