>>33537406 (OP)
That really sucks man.. I'm very sorry.
There's not much to be gained from asking her why, the answer will send you running in circles wondering how you can be better. It is really likely that her answer will be a lie passed off as truth.
I would advise, as hard as it is, to focus on being okay with this person, so that if you ever see her again it won't be awkward.
Respectfully accept the decision, and as much as it hurts, tell yourself that she did you a favor. Don't play uphill. Save yourself the pain of pursuing someone who clearly told you they aren't interested in you anymore.
>Inb4 but she wants to be friends
It's a soft let down language women use to prevent themselves from being violently graped and mutilated, it's evolutionary it doesn't make sense. I know and she knows that you wouldn't do that but she takes the precaution anyways. Don't fall for it, she doesn't want to be friends. End it amicably with an honest message from you about how you feel, you can share your pain and disappointment so that you feel like your voice is heard, and end it with a nice I wish you the best of luck and it was truly nice to have dinner with you and get to know you.