Aleith scowls invisibly accepting that Jildu won’t turn off his light - no matter. She dashes down the hall silently, but slows at the nexus of two paths: one leading to the shadowy form; the other to the armored figure - next to Jildu’s light. Neither option looked appealing, so she glanced back and forth studying the two figures, trying to gauge which is the better target.

Spoiler: Actions
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1: move to K17
2: recall knowledge (shadow) (1d20+12)[19]
3: recall knowledge (knight) (1d20+12)[28]

I am assuming undead here, but if I am wrong, her check may improve.