I (28) got called out by my fellow manager (late 30s) for referring to two teenagers that work under us as "the children." She said I shouldn't call them that and it might offend them. It's not something I am intentionally infantilizing them about and I wouldn't say anything like that if I wouldn't say it to their faces. It was meant to be in fun. The teenagers in question poke fun at my age as well, asking me about my childhood as the 2000-2010's style is coming back. We often have to keep an eye on them because they like to slack off as a typical teenager would at their first job in shift with their work friend of the same age. So sometimes when I refer to them as the children it's a bit exasperated because I feel like their babysitter. I feel like my fellow manager is nitpicking me, and it isn't the first time. She acts friendly but behind closed doors I've witnessed her laughing about firing someone who was kind but slow and not meeting quotas, and she often takes issue with me having questions or not understanding what she says right away. I am much less experienced at managing. technically we have the same title but she has seniority, though she's only been at this job three months longer than me. I feel a bit out of the loop as a manager most of the time because I only close and she only opens and I'm left out of all the manager meetings. Recently I was asked by the manager above us what I'd like my schedule to look like, then was given the opposite of what we had discussed and agreed upon. Often this higher manager also gets frustrated with me for not knowing things they didn't cover in my training. Yesterday was my 6 month anniversary of working there. I want to quit, but need to stick it out for the health insurance. It feels like I'm being pushed out. Their turnover rate is so high, it feels like they gave up on me and are trying to get me to quit faster since I haven't done anything fireable. I think the rest of the management team just doesn't like me.

I'm going to ask the teenagers I work with if me referring to them as "the children" bothers them. I feel sick thinking that I might actually be hurting someone unintentionally, and I'm so anxious I stayed up all night. Even if that's not the case, then this manager maybe is just sensitive and is looking out for them, and I'm just self conscious about being perceived as a bad person. Or maybe I'm the one being harassed. I really don't know that to think right now. AITA?