The girls were not dead. They were just sick from the excessive lust.
Perhaps you still remember, but let me remind you anyway.
Whenever a male fell into their realm, Hera's curse multiplied their lust 100 times for 3 days.
This was the third day with Byron in their realm. You could imagine how horny they already were, not to mention the previous 6 more days of torture due to the two other guys who were with him when he fell into this realm.
That's why the moans coming from the room were a last stroke for them. They couldn't bear it.
Harmonita, the beauty with black hair and ethereal brown eyes...
She was Nym's closest friend.
That explained why Nym was so happy when she checked the pulses and found they were not dead—Harmonica and the others.
"O, Goddess!" repeated Nym, her voice filled with joy. "Thanks goddess! Thanks!"
