[While Yotsuba wasn't quite skilled enough with her tablet to send out a video message in reply, she was at least capable of sending out text and voice messages, so, since she was in a rather secure house at the moment, she'd reply, and while Demyx couldn't see it, she looked worried. He'd probably be able to hear it in her tone of voice.]

Yotsuba likes the snow, but this is too cold! It's super chilly! You look cold too! You should go inside, if you can! Or make a fire! But Yotsuba would like to sing with you!