Welcome to PC, you are in the right place...

it is natural for your girlfriend to feel that way, depression can destroy many lives. the best thing you can do to help her is to let her know you are by her side, no matter what happens. tell her how you feel about her, and encourage her to see her doctor for anti-depressants, and maybe even consider therapy. depression rarely, if ever, goes away on its own accord, it has to be defeated, so guide her towards therapy and medication for it. as long as you show that you care and you remain by her side, ready for her to talk to anytime she needs to, then thigs should improve soon.

i hope things improve, i really do. maybe reccomend this site to her and ask her to join on here, this will help her alot as there are many people here who know what she is going through and who knows how to help.

simon