Answer:
Maybe;
"I never got used to how beautiful it was."
Explanation:
Since the beauty covers the whole idea.
The first option, as it needs a comma
Seeing as you’ve supposedly read this story, I recommend analyzing the text briefly before writing your narrative (mini story from the perspective of Grendel)
Use your imagination to turn Grendel into whatever you want while maintaining facts.
It actually isn’t too difficult. It shouldn’t take long. Let your creativity thrive!