Re-read everything you have posted here.
It isn't ignoring her. She broke up with you. She asked for space. She is leaving you. How on earth does that make you the bad guy here?
Stop looking at her though rose colored glasses and accept that she has left you and most probably never coming back.
You aren't listening. You have every right to ask for her to leave you be now. You need for her to leave you alone. She loves having this control over you. And I think you like her having it in some ways too.
She does have another guy too remember. And if you think she isn't mucking around with him then I think you are sadly mistaken.
I know its tough but you aren't helping matters here and until you do you will feel like sh1t!!