Ana and I are part of a friend group that started in high school. She's loyal but known to drop people and sucks at apologizing. She's dropped friends for valid (friend locked her out for a day with no wallet or keys to hook up with a fuck buddy on a trip) and petty reasons (she hated a friend's boyfriend). Our friendship changed after a fight. Her ex sent me insulting messages from her phone. We fought when she didn't respond because she "didn't check her phone" but I pointed out she made social media posts soon after his messages. She said it wasn't her fault. I stopped talking to her. She gave a weak apology months later after everyone took my side. They broke up over a year later for unrelated reasons. To get our 15 person group together, we plan group meals out at least twice a year. Ana is allergic to shellfish. We skip all sushi/seafood places and people who order fish switch seats to keep Ana safe. There have been times where Ana didn't like the restaurant but her tantrums don't work on people who have actual toddlers and haven't known her forever. Ana's been allergy sensitive lately. She said her boyfriend/fiance exposed to her to shellfish just not enough to trigger anaphylaxis. He'd eat shellfish every time he wasn't near her and took fish oil supplements. Kissing and having unprotected sex exposed her on a regular basis, making her very sick. I call him boyfriend/fiance because he proposed last year. She said yes but insists it isn't official until he asks her mom. She wears the ring and he lives with her in her childhood room at her mom's house. He hasn't asked for mom's blessing yet. We had plans this weekend. Ana never plans the meals. I started the group chat but didn't pick the restaurant. Ana didn't respond. I message her and she's pissed the restaurant has "ocean" in the name and serves some seafood. I ask her to name a different place she texted "You guys all said yes to going on Thursday. So what’s the point." I said we no reservation was made, changes can still happen. She left me on read. The other planner, Ben, asks if the other choices were safer - a Brazilian steakhouse or a lounge we'd gone to before. She said the Brazilian place. I posted the new location to the group and with approval make a reservation. Ana still didn't respond. Cut to the day of the meal. Everyone arrives, Ana texts they're driving back from a another state and are 40 minutes away. Ben says drive safe, see you soon. Ana responds "I'm not going to make it as I need to change and clean up. That's why I said sorry." I'm pissed. Everyone made a point to thank me and Ben for organizing the dinner. Ben joked that I don't have to plan Christmas. It's now the next day and I'm just done. Done checking in on her when she cancels last minute, done hearing her defend the boyfriend/fiance when he's called a deadbeat dad. Done. It's not about the reservation, it's everything. AITA if I stop trying and let our friendship die over a canceled dinner reservation?