Asking her constantly to take you back isn’t going to work, and if she says such things, it means she is unsure and she sees something is not working properly still. Otherwise, she wouldn’t have doubts.
Also, keep in your mind that NC is not only waiting for her to talk to you again. You must fix the problems and work on yourself before trying to get together, otherwise nothing really changes and even if she somehow decides to take you back, you’ll find yourself in square one sooner or later.
I keep my fingers crossed for you, man! NC is very hard but you can do it.