Run Away to Mars

Something happened in that cave.
Doctor Audrid Riley was always a calm, stable person. She was the model resident of Mars and a well-respected sergeant in the military. That is until she went into the Hades Caves. Everything changed after that.
Her husband, Torias, noticed how moody and erratic she had become. She would fly off the handle at a moment’s notice. And suddenly, her appetite for sex had become insatiable.
Then she started talking about entities living in the caves. She insisted she had to go back there or she would die.
Was she just ill?
What happened in that cave?