She tried forr 7 years ! She didnt make that decision easily or overnight. Your relationship was finished awhile back
Like the drink, you need to let go of her tool You both screwed it up !
You have made a new start by stopping the drink etc , continue that by staying booze free and find another girl, plenty out there, relocate far from there and get on with your life,its too short to dwell on disasters ! Learn from it, start again. You wont be the first or last, thats for sure.