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By December 2553, a Threshold Ceremony for Prudence's daughter was approaching when on the first day of that month, her sister, Vice Admiral Graselyn Tuwa, was murdered en route to the colony for the attendance of the ceremony. In addition, Admiral Tuwa's husband, Kerbasi, and their two children, Catalin and Yuso, were abducted. The UNSC's Incident Response and Investigation branch dispatched a team to Premier Tuwa on December 6 to notify her of the losses. The lieutenant in charge had instructions to interview the premier and her staff. Prudence and her staff were reportedly devastated by the news and could not think of any likely connections between the violence and her political office. The Keepers of the One Freedom and the Banished were both considered likely parties that may have been responsible for the murder and abductions, and even though cooperation with the UNSC could have risked the safety of the hostages, Prudence knew her sister would want her to do all she could to assist the investigation. She asked to be kept informed of future developments and allowed the lieutenant leading the IRI team to monitor her communications.
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