She's gone, dude. You have to let things take their course now. Maybe she will see the 'new you' and figure she's made a mistake. Or not. But you hounding her will only drive her further away.
Same for showing her your soft underbelly. Stop it. At this point, all it will get you is your guts displayed for her to eyeball with detached curiosity. She shows all the signs of a woman who has given up on you. Don't expect sympathy b/c you won't get it.
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh