I did not say you deserved to have your phone stolen cause you had it out at a convention. What I said was that, by having it out at a convention where you were on your feet talking to and taking photos with fans, you did not do yourself any favours when it came to keeping it protected. Let me put it this way: I assume you have travelled around the world, so you know that people always stress that you need to be safe with your belongings if you're walking around, to the point that they make it sound like wherever you are going is the least safe place in the world. What I said was essentially the same thing. If the phone meant a lot I think having it out and about at a convention wasn't the best idea, even if you needed it for work. If its needed for work, why not keep it hidden and use (god I sound old fashioned here) a camera for taking photos? A digital camera is far more replaceable than a custom phone with all your contacts and personal info on it. If you want to take the phone with you to a convention and use it, it's your call, but it's my opinion that it's not the safest thing you could have done with it if it was important, and on the off-chance you experienced that first hand.
To be fair, if her husband was there actually holding and handling the thing, I'd have thought that was sufficient security--no matter how much attention she was paying to this fan or that booth, there would still have been another pair of hands and eyes keeping tabs on the phone. Then again I don't know the guy, maybe he's the clumsy type, but it still seems like she was covered in regards to security there.