One of the most interesting things with L'Wren Scott's suicide is that her money problems most certainly played a role in her feeling ashamed, trapped, hopeless, etc.
And her spending problems almost certainly played a role in her money problems.
I imagine that things would have looked more workable if she had scaled back her lifestyle. I mean, there is some sense of failure in shutting down your clothing line (professional bankruptcy) but there can be utter shame in not being able to pay for your groceries because your credit card is declining and you're 6 months behind on your rent.
If it were only a matter of needing to shut down her business, she could have regrouped and done a line for target or for qvc, but I suspect she was in financial trouble on a personal level as well which got way out of control and left her feeling there was no way out. Just speculating, of course, but one can only wonder if she could have done things differently and gotten a different outcome.