Im really on edge

My sister knows about SW , I've shared positive tips or replies with her about trauma or life. She mentioned again joining herself today. I said, ohh it's very sexual themed. I don't know how I feel about it. While I shared replies occasionally, this place was a private space for me to share. Occasionally I'll put a flirty post. I just feel weird if she does join. Plus I have a bit sexual related posts from few years ago 😫😞