she dumped you in an email after years of being together. you had a house together and plans to marry. i'm sorry dude, but this "cause" she's behind is simply the easy way out of commitment for her. she saw herself being domesticated and the life she'd have, and her pride wouldn't let her accept it. her family probably had a lot to do with it as well since she's asian. she's a narcissist who wants to 'achieve' something in her life, only she'll realize much too late in life that you were the trophy she needed.