[his eyes widen] It gets really that hot?
That's really, really bad then.

[But hopefully he'll forget about the whole "heat at Spain's house kills you"-thing
by the time he has to move to Spain as part of the Habsburg/Spanish Netherlands.]

Danke! [laughs]

[But he has no means (and no real interest) to compare her to her sister,
as far as he's concerned it sounds nice and soothing even if he can't understand the words.
It's also enough to make his eyes slowly feel heavy and he lets his head rest against her.
Just a little more and he'll probably fall asleep in her arms.]