Recently me and my partner have talked about moving forward with getting engaged YAY! Where I am very excited for moving torwards our future together I do have my reservations with the whole wedding ceremony/party because of my sister. For context: my family is very fractured so my sister and I have had a strained relationship. In recent years we have tried rebuilding our relationship but I noticed that I was the one really doing most of the work to do that. If she had to make the effort to see me she 9 times out of 10 would cancel. It all came to a head when our birth mother passed. Long story short: my sister was having an affair with the funeral home detector who was doing our mother's cremation and the weekend of her wake my sister found out that he was lying to her about separating from his wife. She proceeded to make the whole weekend about herself and her affair instead of supporting our grieving grandma or be there for me emotionally. Our relationship as not been the same since then, so I decided to have had minimal contact with her. I only hear from her when she needs something from me. (Like she texted me to wish me a happy birthday and asked what my plans were. I told her I went out of town to a tattoo from a specialist. She INSISTED I stop by her place on my way back, not because she had a gift to give but because she wanted to show off her new apartment) Now the problem is that her attitude and behavior has become increasingly more rude and entitled. For example: we recently had a family dinner and it wasn't clear if our partners were invited or not so I wasn't planning to bring mine. My sister then texted me seeing if I was bringing my partner so she could bring her new boyfriend. I told her I wasn't told that i could, so no I was planning on coming to dinner on my own. She replies to me saying "well I'm bringing my boyfriend, and I'm not asking permission". I was taken aback with how rude that felt. I sent a screen shot to our eldest cousin (kinda the head of the younger generation of our family). She then proceeds to tell me about how my sister acted similarly during a family vacay. Saying that she expected her dinners to paid for, never cleaned up after herself and got really toody about not being able to bring her bf. I have a huge fear that when I announce my engagement my sister will start making it weird by getting an entitled attitude or by making it about herself (like she does often). What should I do? Should I confront her about it now to avoid any issues when the time comes or should I leave it be and allow her the space to make those mistakes then confront her about it? (Nuclear options: not invite her at all)