I don't think she would have meant any offense by it. I wish more people I know would stop and sincerely ask how I'm doing, and feeling. It would really make me feel appreciated and more important. Usually if someone says something like that Online it's only because they would find it tremendously hard to say it in person, but of course that's not always the case with everyone. People are also terrified to ask how people are doing because they never know what they are going to receive a reply. For instance, you may say something that they seriously feel they can't help much with, and it will make them feel useless or helpless. When someone asks how you're doing, and they really seem sincere about your feelings, try opening up a little bit, it will take a lot of pressure off your shoulders if you get to release some of that stored up stress we social anxiety sufferers carry around with us.