He made White Bull retreat to the early morning of May 20th.
When Yvalin Belladett captured the group from the Funeral Service Office, she did not hand them over to Red Hat nor did she "nip the problem in the bud" by killing Ash and Harvey; instead, she made a strange deal with Hanna: Yvalin was willing to shelter their whereabouts and even provide them with comfortable accommodations, but in exchange, they could only move within their own estate's premises without permission to leave.
Furthermore, the deal would conclude once the six of them collectively accrued 6000 shell points; at that point, the Funeral Ceremony's people would regain their freedom.
There were six of them in total, meaning each person needed to earn 1000 shell points, and Yvalin would provide them with various positions; working a standard eight-hour shift could earn them 60 shell points, while overtime could even bring in 100 shell points.