Klee was very happy and had returned to her bubbly personality now that she knew Lilly was completely fine. Her happiness even soared knowing Lilly had such a good disciple.
She could see that he was bit naive but it was fine. She knew Lilly would train him and her training would make him good. He also had the aura of Veloxithans with him which meant he had the potential to reach Demi-God Rank.
Veloxithans were ancient clans and everyone who was lucky enough to have the bloodline of these ancient clans carried the potential to reach Demi-God Rank.
Klee was very satisfied with William but also because of his personality. He was reckless, but only because he was worried about his loved ones. He loved Lilly and she could see that easily. And he actually shared that trait with Lilly. She was equally reckless when it involved people close to her.