The chimera girl is just charged to keep Mychasi safe. The plan was to allow him to go on one quest (which he hopefully wouldn't die during) and then keep him busy until things blow over.

That way he would know that he helped save the world!

And if he helped save the world then why would he have to worry about ending the world? Right?

Right!

So brownies.

A delicious distraction.

"Mother keeps ingredients for them near the counter 'cuz the kitchen isn't safe sometimes," the girl mentions as she begins collecting bowls and flour and chocolate and so forth.