Abbey's fear of small dogs

We have 3 Great Danes right now. Abbey has grown up with them. The largest of them was 165 lbs. She never was scared of them, in fact one of her first words was "MOVE!" and it as directed towards our Danes. Then we had our first litter and they would chase her all over the house and knock her down, lick her and bite her hair. Fast forward 4 years. We moved into the house we currently live in. The people that live across the street had 2 Chihuahuas and would let them roam the neighborhood. Abbey, Jock and I would sit out front on the porch and the Chihuahuas came up in the yard where Abbey was playing. They jumped up on her to play with her and she panicked. She started running down the sidewalk screaming and the dogs thought she was playing so they started to chase her. I almost fell off my chair laughing cause all I could think of was the end of Goldilocks. Goldilocks ran as fast as her little legs could carry her. That's what Abbey was doing, she was running as fast her little legs could carry her. I tried to calm her down but she was having none of that. Our neighbors were laughing as well but they grabbed the dogs and took them in the house. Abbey is still afraid of small dogs but she dominates the largest dogs of all.