That sounds like a difficult situation to be in, and it must be hard to deal with but I agree that those who wish to ctb should make sure that they have enough time alone so they don't end up having their attempt interrupted. Failing the hanging method sounds so horrifying and is what scares me.
But for me personally, whatever would happen after I have left this world could never be any of my concern, as I simply wouldn't be there at that point to witness it. The dead are incapable of caring about anything. After all, everyone has to die somewhere, someday, it's our inevitable fate as humans, and the fact that other people get upset by finding someone who has ctb is really the fault of the society for denying people the option of going to an euthanasia clinic, as if that was the case then others would know in advance and would have the time to come to terms with the persons decision to be free from this world.