Walked out— PLEASE HELP

So I’ve worked at the same place for almost 2 years. I started out getting minimum wage($8.25/hour). I was ok with that seeing as the place I worked was supposed to do monthly evaluations and at the end of your evaluation the GM would decide if you got a raise or not. Over the past two years I’ve had two evaluations. Recently at the second evaluation I got told I’d be bumped up to $8.75. I was happy with that. But then I started hearing whispers around the work place about how much our new employees were making. I tried not to listen to the gossip but I ended up listening. At my job the new people are apparently very open to talk about how much they make. I have work my ass off for the last two years. I always took pride in how hard of a worker I am. I would work the shifts no one else wanted (ex. Christmas eve when I was supposed to attend a family event). I have only called off three times (one time I was sick, the next I was in a car accident, and then the last was because my aunt died). I work long hours with no breaks. One of my shift managers got a new summer job to save money for a new place for her and her baby. She was talking to me about this new place looking for cooks starting wage is $10.50. Obviously I was thinking about trying the new place on top of the job I have now. I went to an interview where I was hired on the spot. They were all very nice and seemed grateful to have me working there.

Yesterday I was at my current job (not the new one). My manager was sitting in the office playing on his phone while we were in the middle of a huge rush. The one person I had help in me was a newer employee so he was asking a lot of questions. I didn’t mind answer because I’ve been there done that. I knew he was trying. Finally halfway through the rush my manager comes to help. I tell the man next to me that two items, as I pointed to them, have no tomatoes. I assumed if he had any questions he would ask me like he had been doing. I move on to the next order. Then I hear “Yeah she really should be communicating” I look down the line at my manager and ask what the problem is. He gets an attitude with me and tells me the items were no tomato and I should have said something. Of course I got a small attitude back and said that I did tell the man next to me. And I didn’t mention but should have the the item that was in the same order with no tomato was made correctly. Then my manager and the newer employee start to talk about me as if I’m not standing right next to them pretty much saying that I didn’t say anything and that I was lying so I wouldn’t take the blame. This man has worked with me plenty of times to know I’m a very big communicator on line. So I finished the rush grabbed my car keys and walked out. I called another manager and told her that I walked out and explained what happened.

I realize it was stupid to walk out. But I was tired of that manager treating me like that over silly things. I was so mad because he didn’t come to help until the end and I was keeping my cool during the stressful rush and I did despite the fact that I was in the hottest part of the entire store. I thought why do I need to take this? I don’t get payed enough. I have a newer better paying job. So I walked out. I know it was a stupid thing to do but hey I’m a teenager this is my time to make stupid decisions.

My GM told me to sleep in it and decide if I want to come back.

I’m not sure what to do. Do I leave completely? Do I stay just for the summer? I don’t know. I need advice please.