The thing that sucks is that you know she needs help but you can't really do anything much to change the situation. You try to help in your own way, but often it does not give the effect that you had wanted. Sometimes you can be so busy, selfish and self absorbed with your own business that you tend to forget about it. And in the end, you just cry along with her.
Crying in your own effete and watching her sinking lower in her dark solitude.
Nevertheless, i guess there should be no last stop to keep on trying. There are always other alternatives. But you can only hope it is not too late by the time you have found it.