Yanael was fully aware that it was a spar and nothing more, so she hadn't gone all out with her initial attack on Rabst. And she had no intentions of going all out. There was no need. This spar was for Zach's sake.
But that didn't mean she couldn't push Rabst and make him reveal more of his strength. It would do Zach good to see and feel how strong other people could be.
Zach knew a lot of powerful people. Everyone in his family. The knights and servants of his family. The principal. Kami. Jarron. And now Rabst. He had an idea of what some of his siblings could do, but it was a vague idea and that was it.
Yanael had felt Zach's desire to grow stronger. It wasn't just that he wanted to level up and acquire more authority to satisfy his curiosity. He wholeheartedly enjoyed the process of growing stronger. He imagined himself being stronger and sought out methods to reach and become that version of himself.