Albeit it was not intended to meet with this cursed creature, Adhara has never been afraid.
She was surprised for a moment to see that the cursed creature managed to intercept her, and also its bizarre abilities. But this point her to the fact that this cursed creature must be a powerful one, potentially one of the Witch of Chaos' pet.
It was right then Adhara decided that she would try and gain something from this.
From the start she has always been monitoring the cursed creature's emotional aura to try and read what it was thinking, there are still many questions revolving around the Witch of Chaos that Rex doesn't know.
One of the important ones is why the Witch of Chaos wants the curse inside Gistella.
But in order to get that information she needs to make the cursed creature feel like it was on top of the situation, that's why she purposefully let herself get captured easily to make the cursed creature full of itself.