Made a mistake, need advice, help :(
Hi so I recently joined a big company and I am a recent grad and this is my first full time job.
So 2 weeks in this position, I found a gap in one of our processes. I told my supervisor that I’ll work on it and they said okay and guided me. I worked on it for a week. I scheduled a meet with another manager with my supervisor. I did not ask my supervisor advice on the presentation that I had prepared before sharing in the meeting. 5 minutes into the presentation the another manager said that this was done in the past! And shared the documents. She seemed pretty abrupt and I feel I offended her by assuming. This was my first time meeting her and I feel I made a bad impression. I feel guilty for wasting her time as well, (with a 15 min presentation) because I assumed she should know about this as I could not find evidence of this in the past. I did not ask my supervisor about the ppt as well and just did it on my own. What do you think ? I feel guilty about this.
I reached out after the meeting and said that I’d always ask moving forward to stay aligned.
Please suggest if this is normal or am I overreacting?