Well man she got sick and then stopped texting you completely. At first I was thinking she died. But if you say shes on skype then maybe she met someone new.
Think when she got sick something died inside of her. Theres long distance between you two and there are many things that you cant affect. There might be many reasons why she stopped contact with you. Whatever it is theres just no excuse. If she liked you she would find a way to keep in touch. Looks like her feelings are changed.
Im on okcupid too and sometimes have a great conversations with girls and then they just stop answering to me. Theres nothing I can do about it. Just find a new girls.
My heart goes out to you. If girl really was worth all that distance to meet her then you really liked her. Then again maybe its good that it ended sooner than later.
Doubt kills more dreams than failure ever will