If using an illusion clone for experimentation already sufficiently demonstrated Matthew's caution and care,
then his and Yaya's further use of the illusion clone fully embodied their "cunning" and "wisdom."
During the process when Matthew once again facilitated "learning" for Yaya,
he transferred Yaya's consciousness into the illusion clone.
Yaya would still feel the pain that her main body endured, but it was significantly lessened.
Matthew himself had tried it and concluded that the pain was about one-sixth of the original.
Of course, after Matthew's multiple preparations, the adapted Yaya also successfully completed her learning.
Even though it came at a high cost, when Matthew saw the new talent on Yaya's attribute panel, he naturally felt genuine joy and delight.
Yaya, having grown once more, fell sound asleep in the nest that Matthew had built for her.
Yaya would wake up after a little over a month.