What happened to Tucker? He wasn't in the episode. This guy couldn't use magic. Where is he?

“Seeing Moon’s reaction, both Leon and Rosvisser silently felt relieved that they had not told her the truth.
This child felt emotions more deeply than others. She could feel more joy—and naturally, more sorrow as well.
Even though she was nearly sixteen, they still could not bear to let her face those harsh realities.
And with even younger children like Muse listening nearby, they absolutely could not reveal the truth.”

They can’t keep protecting moon forever she would have to face these harsh realities herself eventually. I do noticed that these two protectiveness of moon is hindering her potential in the story which reminisced the time when moon first awakened her duel elements when they didn’t try to pressured her not wanting to burden her with the idea that she needed to get stronger for her family. Like moon’s conversation with Kaiser “It took me a very long time to understand what my sister meant. But you don’t need to go through that same struggle, Moon. I just want you to know. Whether it’s you and me, or Noa, or your parents, or your younger sisters—we are all emotional beings. And we all need many different kinds of feelings to serve as the motivation that keeps us moving forward.