I think I am just going to ignore. Blocking is too easy.
Is it? It seems like YOU keep going back. It seems like ignoring her is a big problem for you. So I can imagine that blocking her would be quite difficult for you. Despite her actions, if you block her, I think you'll wonder all the time about what she's doing and whether she's trying to contact you... .
Are you really over her? Have you actually made the decision to leave?