Subaru had reached for the door, determined to save Rem from harm even if his current world would soon end. But instead of Rem, he found himself staring at Beatrice's library. Beatrice had remained silent throughout Elsa's attack and saved Subaru's life just moments before Elsa could claim it. Subaru shouts at Beatrice, demanding to know why she didn't help before everyone else was killed, and an intense argument ensues. Then Subaru catches sight of a familiar-looking book...
She said the margrave gave her 
some sort of formal oath...
قالت أن المارغريف منحها قسَماً رسمياً ما
Der Grenzbaron scheint ihr einen
offiziellen Schwur geleistet zu haben.
Dijo que el marqués le hizo
un juramento formal.
Dijo que el marqués le hizo
un juramento formal.
Le marquis
aurait fait un serment officiel.
Ha detto che il Marchese le ha fatto
una sorta di giuramento ufficiale...
Ela disse que recebeu algum
voto formal do marquês...
Похоже, маркграф 
торжественно дал ей клятву.