It depends.
If this person isn't typically depressed and is just going through a rough patch or only periodically needs to have friends help draw her 'out of her shell', then there's no harm done and you're being a good friend.
But if she's milking it, or growing dependant on you for her 'salvation', stay away. You're just being an enabler in a cycle of self-destructive behaviour which'll end up the worse for everyone involved.
