You know, children run away when attacked, they don't just stand there like nothing happened....
There shouldn t be essential NPC.
Essential NPC are only a shackle and an ode to bad plot.
Unfortunatly they are a ncessary evil cause most customers can t even read 5 lines or endure a frustration, so thinking and making a deduction is out of question as failing the main quest or not being the hero, thus the handholders, quest markers, essential NPCs, perks, and otheres full of crap features Bethesda so proudly brag about.
Look out Sarah, that giant Behemoth is going your wa...
oh no, she's dead, now I can't finish the main quest. If only I could've read anything that might have saved, this is all because I'm so stupid...
...no, wait, it's not because of that...