My manager pulled me into the employee bathroom and locked it.

Wtf do I do?? I work in Texas at a hospital, a couple months ago a group of coworkers and I started talking about how our workload compared to our pay just doesn’t add up. Some people who have healthcare experience get paid the minimum and some people who don’t have any experience at all get paid the max, we’ve come to the idea that we were paid based off how bad they needed new people. Recently they made up these new Lead positions, one girl was offered the lead position and turned it down because it was only a dollar raise (she gets $16) and she said no bc she’d get as much as most of the people she works with who are considered just regular employees. A week later my manager saw me and said “do you have a minute to talk?” I said yes, followed her and she disappeared, I found her 20 min later and said “hey! There you are you asked if I had a minute but then totally disappeared haha!” And she said in a serious/ passive aggressive tone “yah. Because I didn’t have a minute.. because I’ve been working . Do you have a minute??” And I’m standing there like wtfff and said “I mean yeah?.. I thought YOU wanted to talk to me ??” And she’s like “oh! Do you have a minute to talk??” And I’m like “..yeah, do you???” And she’s like “yeah! Let’s go!” And I follow her down the hall, we walk in a meeting room , there’s a nurse in there and my manager goes “ugh she’s in there!” We keep walking down the hall and she’s like “where do we go , where do we go” in a frantic tone and I’m like “uhh your office ??” So we go over to her office and they’re doing an interview and she’s like “uh they’re not done yet ! Uhhhh let’s just go in here! Come on!” And it’s the employee bathroom next to a stock room (where they’re a dude actively stocking it and he saw all of it and it was so awkward) but I’m like “uhm the bathroom???” As I’m walking towards her still following and she’s like “YES! Come on !” And I’m like “the bAthRoOm????” And again she’s like “yes come on” and she was already in the bathroom and I was so hesitant but still followed because I trust her and I’m fucking confused and that guy is staring at us and I’m uncomfy.. as soon as I step in the bathroom with her she deadbolts the door , turns to me, and says “so I’ve been hearing you’ve been talking about your pay and comparing your pay to others and you aren’t happy with your pay.” And I’m like leaning up against the wall trying to look nonchalant about how fucking weird this is and I’m like “well a few months ago a group of people were talking about our pay and I was one of them yeah “ she’s like “I need you to NEVER talk about your pay again. It’s NOT OKAY!” And I was like “well I thought it was okay bc in the state of Texas it’s legal for us to do that.” She’s like “NO it’s not okay! It’s YOUR business. We pay you guys based off experience so not everyone is equal! What if one day I wanna give you a promotion, and you get paid more than others annnddd they get upset at you bc you have less experience here!!” (OBVIOUSLY REFERRING TO THAT GIRL WHO TURNED DOWN THE POSITION) and we went back and forth of how I thought it was fine bc it’s legal and she’s saying it’s not okay and if I had an issue with pay I should’ve told them and I told her I was waiting for my yearly evaluation (which just happened this month) and she asked if I’m still unhappy and I said “well. Who IS happy with their pay? Wouldn’t you wanna get paid more??” And she’s like “OF COURSE I WANNA GET PAID MORE I WORK SO HARD “ and I’m like yeah exactly. And she goes again “but it’s NOT OKAY” I told her that she doesn’t want us talking about our pay bc it creates problems for THEM and she didn’t disagree. We ended with her asking “so. Do you have anything ELSE to say????” Still extremely passive aggressive and confrontational and I’m still trying to process that we are in the fucking restroom and I just shake my head bc I want to leave asap. And she’s like “okay! Good!” And walks out. I was dead silent for like 2 hrs just thinking wtf. Before this her and I had a great relationship, I trusted her and never felt afraid of talking to her but now I don’t even wanna be at work. I called in today and I don’t want to go to HR bc it might make it worse , I’ve thought about confronting her and being like “we need to talk” and essentially saying , don’t ever talk to anyone like that again but idk what points to make or how to put my feelings together 😭 any advice or feedback would be appreciated thank you for reading sorry it was so long

TLDR:manager pulled me in a bathroom locked It and confronted me on talking about pay and told me to not do it anymore even thought I checked and saw it was completely legal , hella awkward and uncomfortable pls help wtf should I do next