I tend to agree with KBlaix and Glacier on this. One of my dogs can be dog aggressive. For the most part she's fine but periodically she'll run across one she doesn't like and I'm not willing to chance it. I have control over her but I don't have control over another dog so I always keep her on a leash when in public to make sure she's close and I never take her to off leash parks for the simple reason I know a lot of owner don't have full control over their dogs.

So I guess my response to this situation would be dependent on if you were in an offleash park. If you were then I can understand the woman being upset (although it sounds like she over reacted). If you weren't and both of you just had your dogs offleash then no she had absolutely no right to act the way she did especially since you had control and she didn't.