I don't have much advice except as others have said, don't make a big deal out of it. My cousin has a phobia of dogs and she is 6. The most annoying thing about it is I think she would be fine if her parents just wouldn't make such a huge deal over it like "OMG There is a dog Cara is scared of dogs omg"
When I was out with her and we saw a dog I was calm and I kept hold of her hand and walked her right by. I didn't avoid it or make an issue or even acknowledge it was there and as a result she was completely calm about the dog. After we were past it we had a chat about the dog, I said I thought it was cute etc. She can be fine about dogs, it's the people around her who are so anxious all the time that make her nervous if you get me?
Be courageous, believe in yourself, and be the best woman you can be. I'm with you all the way.