I'm not "worried" about your coming back; you're not treating her with respect or letting anyone help you. She may not be here when you get back. Secretly hoping for something from someone is immature (not bad or wrong, just unrealistic) if you don't clue them in on the "plan". People who kill themselves or do other drastic things leave notes; you need to talk to her/others in person, give 2+ weeks notice if/when you decide to leave your job (not for convention, but again, to help the other guy out as well as out of respect for yourself) and have another job lined up.