Your dream could symbolize that she changed in some way unrelated to a hair cut and the blond streak in the hair like your own could mean that she is still a part of you and your life or it could mean that she changed so she could be like you because she realized that through out the fight that you were more stable and connected to what you were saying and she wants to have that component too and lastly it could mean that she is you that you too are so alike that your the same but not if that makes any sense