Fairy Thunderblaze was intrigued by Davis.
He seemed to have the craziest ideas that she wouldn't dare try, for she knew that she would meet with death, but back then, the method that he used to create a pill was actually viable for her as well as she had enough prowess, so she wanted to know the secret method that she could try it and collect annihilative heavenly flames by herself.
However, he refused, which she couldn't say anything about.
Besides, he didn't try this method himself, which made her doubt if he was lacking in alchemy knowledge or if he didn't want to increase his karmic burden by offending the heavens again or perhaps both. Either way, she knew she wasn't going to acquire this secret method, so she decisively chose to borrow his lightning spirit for cultivation.