What is the difference between anrühren and anfassen?
anrühren is actually wrong. In a literal sense it indeed means to touch, however, it is mostly used in this contect: Ich konnte das Essen nicht anrühren (I couldn’t eat this, not even touch it). Using it in connection with a corpse implies that you were about to eat it but due to emotional distress didn’t manage to. So, anfassen /(berühren) would be a better choice of words.