How does Enzo come back to life after Stefan kills him?
He tried his best to figure out how to get out of the Other Side and put his trust in Bonnie. In Home, Markos was sucked into Hell and Enzo successfully passed through Bonnie, returning to life.
Is Bonnie mad at Stefan for killing Enzo?
While doing this, Bonnie is in tears at the death of Enzo, from Stefan’s hands. In What Are You?, Bonnie is still devastated and angry that Stefan killed Enzo.