Genelia, first I am sorry for you loss.
it is hard to answer you poll because we don't know your path your path healing. I voted yes but you should if and only when you are ready.
If learning about what may have happened to her helps you heal you should do that.
If learning about what may have helped you either does not help you or worse hurts you, you should not understand.
Over you time you should consider looking into it. I think it is tough though. It sounds like there ins' t much evidence to really look at based on your O.P.