I wish we would start calling it like it is and stop saying depression is a 'chemical imbalance' or a 'disease' like in the physical sense. It is emotional distress. A person who kills themselves is in such deep emotional torment and distress that they can't bear to feel it anymore and truly believe that their loved ones would be better off without them such is their sense of self esteem/worthlessness.
Self esteem and core beliefs about ourselves, and our perception of the world are sown in childhood and can be further negatively affected after traumatic incidents. When I read news stories like this, no matter how famous or wealthy the victim is, I always wonder 'what happened to you' because there will always be something.
I can only imagine what the poor lady was going through to hang herself which is certainly not like taking pills and booze. I considered at length every way possible myself, and how it would affect the emergency services who would have to deal with it. I didn't want to cause harm to anyone else just myself so the pain would stop.
No one would have had any idea of what was going on inside me. My mask never slipped.
The only thing that stopped me was worrying that something awful might happen to my DC after I was dead and I wouldn't be there to stop it or comfort them. Them losing me was relatively insignificant as I wasn't worth anything!
I hope her DD is given effective help to understand, because it really is incomprehensible when you've never felt it.