FFS people - who gives a flying toss who is right or wrong? Man down here ... take the argument elsewhere.
Looie - Look, at least now you know how she feels about you, so that aspect is gone. Give it time and she will talk to you again. If you asked her in a dignified manner, and didn't shame yourself, hopefully things will improve in time. For the immediate future, just let it slide as regardless of your intentions, emailing and texting her can be misconstrued as harassment. Yeah, it is a shame that maybe the feelings you have for her aren't reciprocated but thats life. Of course its natural to feel like a bag of s*ite, but that'll pass ... you won't forget but it'll get easier.
Have you talked to anyone about this? If not, I would do so - a good friend, if possible a mutual friend, just to let him/her know that you are sorry. Nothing about possible meetings or that.
Immediately, go out and do what makes you happy for today. Ya need a few days to get over this so why not take a break - situation you are describing, you're not much use to the PhD at present.