People Can't Succeed In These "Am I The Jerk?" Stories

"I (18F) am a college student, and my main friend group is a few girls who live in my building. Recently, one of them, I'll call her "Kristen", has started leaving some of us behind when we go places as a group. We have a group chat where we arrange meeting times and places for when we want to hang out, so everyone is on the same page. Tonight, I went to the dining hall with Kristen, and two other friends I'll call "Callie" and "Leighanne". Leighanne lives in a different building, which is literally in the triad of freshman dorms, so we pass right by it when we walk to dinner. Several times, Kristen has tried to leave Leighanne behind on our way to places. Here's the issue--Callie and I were going to meet in the lobby of our building and leave with Kristen, and Leighanne planned to meet us in the dining hall. I texted Callie saying I couldn't get my boots on and that I'd just be another minute at most. My room is right by the lobby, so it's not like they'd have to wait long for me to meet them both there. When I walked into the lobby, Kristen was arguing with Callie that I was late, and she was halfway out the door. Although Callie said, "Where are you going? She's right here," Kristen waited about two seconds before leaving completely. Her leaving people behind when we go places isn't new. And it's really started to cause problems. I asked Callie if something had happened, but she said that Kristen had been like that since they met in the lobby. So Callie and I walked together while she was walking way ahead of us. I also have a hip problem, so I can't always match her pace. So I was practically limping trying to catch up with Kristen. And she didn't slow down at all, while Callie did. (They both know about my hip.) Dinner went fine. She acted a bit agitated the whole time, but when we asked if something was wrong, she got very defensive, so we dropped the subject. When we were ready to leave, I wanted to grab a little container of desserts for later, and Kristen decided to go to the bathroom while I did so, so again, I didn't think anything of it. But then, after thinking back on her attitude the whole time I was with her, I asked Callie and Leighanne if we should just leave her. So we did. And I feel bad for doing it, especially since I had really only said it to be petty, but Kristen has done this before to all three of us, as well as our commuter friends, when we all hang out. So, AITJ?" Another User Comments: "NTJ - honestly, screw that behavior. Since you’re 18, I’m assuming you’re fairly new to college, so here’s my tip as a recent college grad: Your early years are the time to make a ton of friends and then cull them as you figure out who you actually like. It’s time to ditch this girl permanently. I am curious though: How did she respond to being ditched?" Commercial_Camera257 Another User Comments: "NTJ. Kristen sounds like she's trying to pull some power plays, testing everyone to see how much she can push them around. It makes her feel superior, but this kind of behavior usually stems from deep insecurity. However, this absolutely doesn't excuse her petty behavior. You've done things right -- called her out on her childishness and let her subtly know that it won't be tolerated. If she doesn't get the hint and keeps pulling this crap, I'd seriously consider excluding her from your friend group. Nobody needs drama like that." Much-Leek-420