There's no reaction at all?
What Nizemar didn't know was that these guards knew their place in the hierarchy—they were simply decorations meant to give the temple a regal appearance.
The entire White Bone Castle was a temple built by the Holy Tree Duke. She could appear or disappear anywhere in the palace at any time. It was only one of her most inconspicuous powers.
Although they were nominally guards guarding the Holy Tree Duke, they weren't much more useful than the vases placed along a corridor for decoration.
The guards didn't bat an eye at the duke's disappearance from the reception room. At the very least, the thought that the duke had been dragged away didn't cross their minds.
Just as Nizemar was marveling at the security of Holy Tree City, Elise suddenly asked, "Did time just pause?"
"What?" Nizemar asked curiously.
"I can see the Threads of Time woven around me, and I noticed some of them breaking and reconnecting."