Do you think i am dishonoring my mom?

I am a biracial 15 year old, my mom is white and my dad is black. I identify myself as a black girl even though some people don't realize im black. I don't have self hatred or anything but when people tell me i'm not black it hurts my feelings. i tell them im black and they ask if im sure. My friends said by identifying as a black girl i am dishonoring my mom but i am not.