fact is you have already been dumped. i have been through this 100 times before i learned anything about pickup. it means one of 2 things, maybe even both, she has lost attraction for you, or she is attracted to someone else. its really tricky to get the attraction back, and who knows how long that image of lost attraction has been burnt in her mind. the longer its been there, the harder it will be to win her over again. radio silence is a good idea, its ok to be civil but dont initiate contact with her, let her contact you. keep any interaction breif and always be the one to end it. radio silence is good for both of you but it alone wont win her back. you will have to hit more attraction switches like, seeing you with other girls and getting jealous, show her that her decision does not affect you. you are not going to sit at home and cry about it. and most importantly dont just go running back the second she says she wants you back. if you jump through that hoop she will see you as a pushover and that she's in control. then she'll just dump you all over again a week or two later. she wants you to be the leader in control.