Page #1038: You Chose A Lovely Place To Die
Just so we're clear, her wound closed over her top and that's what's holding it up. Not that it's hiding much as all Orrotta have basically doll-anatomy, since they're organic constructs (basically magic androids) and the vague "humanoid" shape is simply to make them less creepy/more relate-able to young Scotodino. Earlier constructs were sort of uncannily creepy and made terrible nannies and doctors. (のᵕ の) Of course they didn't make the Orrotta actually look anything like a Scotodino, they wouldn't want another Scotodino to be mistaken for the servant species.
But to be even more clear, the Orrotta ARE alive and can therefore be killed or become undead.