Up the wall

There is this lady that I work with that is driving me crazy. People know me, I'm extremely patient with people who are technophobes. This women is in charge of the school newsletter but don't ask me why. Each month I start from scratch teaching her what to do. I have to upload pictures from HER camera, edit them, email them to her then show her how format the newsletter. I probably would have a better attitude if she would be a little nicer to me about all the help I give her.
Right now she is treating me like it is my fault that the newsletter has not gone out yet. Sorry, I don't have the convenience to work on these sort of things while my students are working. My students' work is a little more involved than colouring.
She even had the audacity to yell at me last month when she accidentally deleted the pictures. She asked me for the pictures again and I responded "Oh, you don't have the email anymore?" Apparently that is an offensive statement.