[55]
It means it is still possible to treat her.
That means it is still possible to treat her.

[56]
If there are even people subordinated or charmed by them in this castle,
If there are subordinated or charmed people even in this castle,

we can't call this place safe for Divine Cock-sama either now.
we can't call this a place safe for Divine Cock-sama either now.

Of course, I will put my life on the line to protect Gerberga-sama.
Of course, I will put my life on the line to protect him.