Jayteeto
I don't normally post on here, but IMHO you are indeed out of order and potentially inflicting distress on the relatives. You haven't a clue what happened. Suicide is but one possibility but unlikely in someone who was seemingly physically ill. Suicide in patients with psychiatric disease reduces with physical illness. There are many other possibilities including the patients illness, equipment failure and crew failure. I do not think we should go into detail as it merely furthers speculation but if you PM me I am happy to give you examples of all these.
Lets wait for the results of a formal investigation.