The dancer ultimately couldn't bring herself to be ruthless.
Little Deer's intentions were clear to her—sending the young ones to "test the waters" meant leading those former colleagues into a trap.
Although they were unwilling to do the hard and exhausting work, unwilling to search aimlessly across the country for the Blood Celestial Marshal... But using an excuse like "discovered a treasure" would easily lure them in. And the more corrupt they became, the more susceptible they were to manipulation.
"You really are kind."
Little Deer sighed, concluded her prayer, and stood up to leave: "Forget it... Who knows how much longer we'll be colleagues. Since this is how you feel, I respect your wishes. We've investigated to this extent, which is more than enough. Go and rest, I'll report the results to the teacher."