I offered to do a small admin job that would help both of us out and she agreed it was a job she had been meaning to do for ages. I said ok I'll do it, she said thanks and off I went. The next thing she was literally standing behind me the whole way through telling me how to do simple things like scroll up and down a document, she was leaning on the back of my chair and in the end took the mouse from me and started amending the document herself which I thought was really rude. I was irritated and asked her if she would like to finish the job off to which she flounced off saying that it was my job to do it. So I carried on and she came back and did the same thing all over again! This time I bit my lip. Once it was finished she was going off to deliver it. I suggested that we make it available for other people to use too because it makes everyones job easier and she said if I wanted to share it with our colleagues then I could do it myself because she didn't want to do that extra work. AIBU to find this woman annoying and rude?