Sir ashler is the only one who genuinely cares for Abel. Out of five main captain guards thingy, sir Ashler is the ONE, it's just unfortunate that sir Ashler is not on the same tent at the time. And only the Captains knows that Abel is the true regas (excluding the butler and others), so no one really knows how important Abel really is.
So it's really not surprising why no one gaf when Abel gets taken.
It's true that asher is the only one that really cares bit still he just left him? The only sort of explanation i could think of he can't trust anyone. But that still leaves the butler? and his friend that knows.
Really NO ONE was with him or near him? At least guarding him or whatever tbey know how important he is and that's why he was put in a different tent to keep them all safe but they just LEFT him there alone?? I don't get it