From the very moment that Riya awakened and became a healer, she always had doubts in her mind.
'All the teachers and all the senior healers say that 'healing' those in need is the duty of a healer… But how do you 'define' that person in 'need'..'
Even when fighting in a dungeon, you are ultimately attacking other creatures home and killing them mercilessly.
Wounds inflicted on those beasts can also be considered wounds, and they can also be considered someone who needs 'healing' magic.
However, no one goes ahead and heals a beast that you need to kill to conquer the dungeon.
Because every creature in the world is inherently 'Selfish'.
If it benefits you and you think that it's morally right, then you would not hesitate to hurt others.
That's the way the world works.
Trying to run away or trying to not acknowledge this fact is pretty useless. You can't run away from something that is an inherent part of your existence.