A close friend gave her first presentation at a professional conference recently. Before hand she was nervous about it and I offered to watch it through with her but she said no. On the day of the conference I was on annual leave and did a quick search for the conference on twitter to see if there would be live tweets, something common in our industry, and found a link to live streaming of some of the presentations. Without planning to I ended up watching my friend's presentation. When she sent me a text later to say it had gone ok I told her I had seen it online. She is now really really angry with me for watching her, and says that i shouldn't have told her that I'd seen it, even though it enabled me to give her some feedback which she is going to use in future presentations.
At the time I didn't think I'd done anything wrong, I watch another friend's presentations online all the time, although he is a more experienced presenter, but with hindsight i can see how for her as a first time presenter it may have seemed a bit weird and maybe 'stalkerish'. I'm not sure how I'd react in a similar situation as I'm not yet at the point in my career where I give presentations. Any thoughts?