This one is kinda a weird one but I really would love some feedback. For context, I work at a subway and I text messaged this to my manager. I am a really good worker and liked by most of my peers. I also fallow nearly every rule. I have came in multiple times to work when I was not supposed to in order to cover peoples shift, worked longer shifts, have a open schedual, and have done some very niche annoying things for the company. I have only been here for 2 months and she is a new(ish) manager. We are also understaffed. The official rules say we need to have a 2 week notice but this came short notice so I only gave a 5 day. Here are the exact texts as they went down today. 

"Hey (manager). I wont be able to make it to my shift this Saturday. Sorry in advance for the short notice."

"How come? Also did you find coverage?"

"Its personal reasons and your the first person i told. I can ask around but if I cannot find coverage I still would not be able to come. And if I could pick up the hours on another day I am down."

"Ok this is a one time pass. I will not allow this ever again. It’s a rule that you need to find coverage or you are written up. I’m letting this go this time and don’t worry about finding coverage I will adjust the schedule on Monday"

"Thank you. Again sorry for the short notice. Do you need me to ask around?"

"Also just a heads up never message your manager saying FYI I’m not coming in on a certain day if I find coverage or not. It’s not polite nor professional. Asking for help is the way to go bud. It goes a long way. No I will change it accordingly on Monday"

"It was an emergency and I asked my mom. She told me to just say it upfront because she won't let me go (and that what she does). Sorry if it seemed rude. ^its not my jive but my moms the boss"

"That’s fine, but I would not talk to me like that again. Your mother doesn’t speak for you bud. If things happen that’s fine but again asking for help and explaining that it’s an emergency goes a long way."

Note: Please dont ask what is filling up my day on Saturday! It is quite personal.

TL;DR - I told my manager I cant come in for a day I worked a week ahead. She took it personally. 