Izetta is powerful enough to fight whole armies, but her strength is limited.  She can only use her abilities near certain ley lines, and outside them, she's no different than a normal girl. When the Germanian army attacks in a spot far from these ley lines, the duchy is forced into a corner: how can they repel these foes without giving up the secret of Izetta's strength?
Won't this make it harder for 
the Germanians to attack?
ألن يجعل هذا الهجومَ بالنسبةِ للجرمانيين أصعب؟
Wird Germania es sich nicht
zweimal überlegen, uns anzugreifen?
¿No hará más difícil
que los germanos ataquen?
¿No dificultará que los germanos ataquen?
La Germania devrait
être réticente à répliquer, non ?
Sarà più difficile anche per i germanici
alzare le mani su di noi, no?
isso não vai fazer os germanos 
pensarem bem antes de atacar?