An adventure to a forbidden realm

The goddess of water, discovered a new realm unseen. She enters the realm, realising that it was a forbidden cave. Then, she sees something so terrifying it will haunt her for days on end. But one day, she prays to god, to get her out of it. Her powers, which were suppressed until now were starting to scare the creature, who kept her captive, were suddenly fearing her. Her powers will be the death of those creatures.