Hi angie,
I was able to get on disablility at the age of 19 due to the severe depression I have. I was also diagnosed with borderline, but I really don't think that mattered. I think it has to do with the paperwork that the doctors and all the other people that see/seen you have done. I am not an expert in this because my social worker did most of the work for me.
I wish you luck and please keep us informed. Good luck and take care.
Jen