Lucy wakes up in a hospital room, with Del Rio and a few other officers and doctors waiting, right after they have apprehended the other mules.
This action was meant to purchase her silence on the matter of Lucy's existence, yet it likely would have awakened Kōuta's memories since he regarded the young girl as another younger sister or even a daughter.
Kara blushed madly, even though the contact lasted a few seconds, hidden from prying eyes.