I sympathize with this woman but there are lessons to be learned here:
1. Never try to pet a police or guard dog no matter how "cute" or friendly looking it might seem. It is not a pet but a work animal who is likely to respond only to its handler. It will consider a stranger as a threat.
2. Sue the hell out of the security agency if the attack was unprovoked.
3. News reporters should learn that "K9 dog" is redundant. K9 comes from the word "canine" meaning "dog". That's like saying "feline cat".