"You're not prying, Rose, you're family." He smiled fondly at her and took another bite before continuing. "Aoife lost a family member recently and I was one of the people at the scene. And since my partner is useless at being human, I took her away and talked to her. I explained I knew what it was like to lose family and she just sort of kept coming back over the next few weeks to talk about things. Eventually we worked out we had Kat in common. And she ended up here and stayed the night because everything hit her while she was out and she didn't want to go home. I was glad she knew she could come here, though I have no idea how she knew where I lived..."