Agata couldn't say anything after reading that note.
On the other hand, Theo was curious as to how far Nella was being controlled. He still remembered how Nella was so agile every time they met to the point she could sneak in a message back in the Grand Gaia Competition's banquet.
Seeing that she managed to do it perfectly while being controlled, Nella must still have a portion of her consciousness. So, Theo wanted to know more about the situation to see whether he really needed to kill Nella or not in a life and death situation.
Of course, if such a thing wasn't necessary, he would be happy to play along. After all, Nella was one of the few people that had yet to lie to him. Although her ambition was weird, he could still trust her.
Even though he didn't want to have anything to do with the Griffith Family, knowing Nella and getting along as an individual was more than welcome.
That was why he felt bad to see what he expected had come.