.(Sothis waking Byleth from his slumber. Mostly calm. When she says "No," after speaking of fate, add a small chuckle as she says it)

I will never understand how you always manage to end up… here. Asleep. No matter how powerful the attack or how great the fall, death refuses to take you. It is almost as if something is keeping you from dying. Fate perhaps? No. I suppose a better answer is that you are just too stubborn to die. After all, you can’t. Not when you are so close to seeing the future you have dreamt of for so long.

(Sothis gives an irritated sigh in the beginning. The first line is said with a bit of disappointment. After she says, "...Not one bit..." her tone becomes much more serious, especially in the last line)

You really have not changed. Not one bit. You wish to save them, do you not? Then open your eyes. Draw your sword and fight for them!

.