It sounds like maybe she has anxiety/depression. It may have nothing to do with your argument so don't be hard on yourself. Just apologize and be there for her. Encourage her to see a Dr as he/she is the professional who can truly help.
I doubt her problem has anything to do with you. Get her to a therapist if you can.
standby your woman and she will be there for you :)
Just a quick thought, you probably arent going to make her live a normal life no matter how hard you try. You really cant make someone do something like that. You can help her get help, you can help her by getting some help for yourself. But the bottom line is, she gets to make those decisions on if she wants to proceed and how she wants to proceed.
thanks guys for your support.. i got her to a therapist.. she tells me she's feeling better now.. she has started smiling again.. i believe she's gonna be just fine..!!