Am i dreaming too big or is she really being a stupid mother?

Okay, well, i can officially say i am quite geeky. I am 16 years old and considering my college applications. Problem is, my mother. I have always been quite articulate, i was thinking about colleges and universities since i was like ten years old. Truth is, my family isnt very clever, in the job wise. My mum works as a cleaner since she left school at 16 and wasnt bothered with college. My dad in unemployed and stopped going to school when he was 14. I have always dreamed big and made it my goal to go places and do things with my life. My plan was to atten college in another country but my mum said she wouldnt allow it and sent me on a guilt trip by saying it was her being a bad mother and i wanted to get away. That is most definately NOT the case. I promised her i would attend college locally but i want to attend a university in Alaska or Cairo or something like that but the same thing happened. She started crying. I know its hard for her to let me go but this is useless, doesnt she want me to do things with my life? I understand the college thing, maybe i am too young, but i am going to be 19 when i go away to Uni, she cant keep me a baby forever.