Hi Zzxxee, I can only echo others comments, that at least you gave it your best and tried. Nobody can say how they are going to react in such sad situations until you witness it yourself.
Can I just ask one question - have you thought this through properly. You say you found the young poor child passed away today? Maybe if you have a good think about things first.
If you have thought about it and still come to the same conclusion, then that is fine. I admire that you decided to take this job on. I know I couldn't have had the courage to work there. I lost my mum to cancer 3 years ago, she was only 53. She was in the cancer ward at the general for 2 months before she passed away there. I am still afraid of going into hospitals now.