first it don't amtter how you end it or if you had teh last word or not, no contact is about you forget about this girl and move on, to ignore all msg she send you after if she does(that make the last word you want void), you don't look for info on her, delete and block her from all media(cellphone, facebook, e-mail whatever else you had her on), and move on.
what you are trying to do is to force her think she needs you and making her miss you. and that will not work. no contact is not about the girl, is about you, you moving on, you learning from your mistakes and meeting new people without wasting time on her, to make your mind forget about her. I did heard some people saying doing so make they girl come back but I never did remember anyone saying they never break up again