Since Olivia was indeed pregnant… that meant her body's Spirit Energy circulation had already shifted to support another life. That kind of state would naturally weaken her resistance, especially against psychic or sonic-type assaults. It was one thing that she learned in her alchemy books.
"Damn it…" Anna muttered as she failed to consider this before the event...
"That explains why the others weren't affected as badly. Her energy flow must've fluctuated the moment that scream hit…"
Without wasting another second, she sent a message to Shane.
[ Anna: Commander Shane, I've got a medical emergency. Olivia, the healer from the infirmary, is showing severe aftereffects from Zombie Lord Bell's sonic attack. She's… also pregnant. With my diagnosis, her condition makes her more vulnerable to residual frequency damage. ]
There was a pause, then Shane's reply came through almost instantly.