Problem at work

Hi friends. I (25F) got this job about two months ago. I get along really well with my coworkes (or so I thought) and complete my tasks efficiently (I had compliments about this from superiors). Today, I was really stressed. Our boss is really unpredictable, one day she is your best friend and the next day she treats you like shit. Today it was shit for me. She talked to me so bad all day long. I got really really stressed. She told me to do a task, that was unnecesary and she agreed. I had to take the boxes out. She wanted to tie them, but told me that it was not needed. A coworker started tying them, I thanked her. After a while, I told her that it was not needed, that we could take them out as they were (tying them would only make them more complicated to trash them). But I realised I said it in a bad tone. I was stressed about my boss and her sensless petitions and ungratefullness about all the tasks completed, all day long. My coworker got really mad, and another coworker of mine, the one who took out the boxes with me, said too “she really took bad what you said to her”. So when we gor back, I approached her and told her “I’m sorry for the way I talked to you. It was not okay but I want you to know that it has nothing to do with anything that you were doing, I was stressed about x situation.” She said very angry “no, no, no”. At first I thought she was saying “it’s okay, don’t apologize” because we say “no, no” in spanish when we meant this (and because she knows our boss is very intense and always complains about her). But when I realised she was still mad at me and was denying my apologize, I said again “I’m sorry. I was not mad at you, I didn’t realised I was talking bad TO YOU. I was mad about the unneeded petition that would make the task harder for us”. She told me really mad, that there were ways to talk. I told here that I agreed and that I was sorry. Then she proceeded bad mouthing me and told me “just because someone else talked bad to you you don’t have any right to talk bad to others”. At this point I did got mad about all the guilt trip. I now it was wrong. I wasn’t mad at her, I was mad at the situation everyday with my boss and I talked bad, but it was not intentional not to her personally. I told her one last time that I knew I was wrong, that’s why I recognized it and went to her and apologized for it. After this, I felt really bad, I started crying and wanted to quit. The stress of the previous days and specially of today really builted up. It seems like my coworker told our boss, because she then told me (my boss) “It is not the first time someone complains for the way you talk sometimes” ? I’m all about being autocritic but I really thought there was an AWESOME treat between all of us. I never talked bad to them, not consciouslly, I was nothing but a good coworker to them since I got in and they always told me that, how happy they were that I got into the team. Then the boss continued to tell me that they still “apreciate me” and that I am “a good employee” but continued to try to convince me that I talked bad and that they knew it. I want to clarify that I am extremely kind at work, people even let me good reviews on the google site, about “the nice curly employee”. I am now confused, sad and really want to quit.