Overanxious: PUHLEEEEEEEEEZE stop this OSD thinking you have about your ex girlfriend. You are boardering on obsessive and detrimental treatment of YOURSELF.
She's a nut, you can't expect to understand the thought process and actions of a nut. If you want a true diagnosis and to actually find out how a nut feels and thinks you'll have to ask a squirrel.
Seriously, Time to let it go. Your questions do nothing but keep your thoughts mired on her. You job is to distance your thinking of her and to detach. Continuing what you're doing is the opposite of that.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion