Scary scenario

Your walking on a cool summer's eve and out of nowhere comes a dog. Now your dog is on a leash and this dog is free, and you can tell she wants to play but your dog has nowhere to run. I tried going backwards but the dog still was bouncing around. Kai kept trying to get around the dog but the other dog just stayed in front of her. I felt like a maypole. A young man was driving by and looked once, twice and then turned around and came back. By this time the owner was there and trying to get his dog to come and Kai was starting to want to snap at the dog. I moved toward the street but the dog followed. The owner got his dogs attention just enough so I could scoop down and pick up Kai. Then he was able to grab the dog. HE kept apologizing and I knew the dog wanted to play but Kai was terrified. After the guy got his dog, I quickly crossed the street and waited to put Kai down until I was sure we were out of range. The young man left and we continued a briefer version of our walk. By the time we got home Kai was so worn out from trying to evade the dog she went to bed at least two hours earlier than her normal bedtime. Every once and awhile she would let out a whimper. I took her to the dog park today, but she did not want to be around other dogs, this scenario put us a step backwards in her socialization. Any thoughts on what I could have done different?