The interview with Rosalind Nott lasted many, many hours. Once she got over her initial shyness and shame, she was extremely cooperative. A few times she continued speaking even after the Veritaserum wore off. To be safe and to ensure that they could trust what she said, they always had her repeat what she said again under the influence of the potion. Each time she told the truth. She was easily one of the most cooperative witnesses they'd ever had. Sneaky too. Despite clearly being terrified of her new husband, she'd had many opportunities to snoop through the manor to listen at keyholes or uncover hidden nooks and other hiding places while she was left alone during the planning of her wedding. Neither her parents nor her betrothed thought that she would be able to provide anything useful to the conversation so she was left out entirely. She promised to be helpful in the inevitable investigation that would take place in her new home. There were a few cupboards she thought they would find interesting.