Cordelia entered the pub in her usual meek manner, relieved to find that it was mostly empty when she arrived. The music and the sweet, strong voice that carried through the building told her that the pub was definitely not empty, and she followed the voice to the kitchen, where she stood outside the doorway collecting her nerve before she entered. Belle seemed like a really nice person when Delia was talking to her over the notebook-comm-thing, but she wasn't really sure what she would look like or act like or even how old she was. She was clearly a giving person - she was making supper for anyone who wanted it after all - and she could obviously sing.
Delia herself might've joined in, Aunt Lily liked the Beatles and had played their music often, but she was flustered enough as it was without having to add singing into the equation. She didn't want to interrupt Belle, though, so when she finally entered the kitchen she lingered closer to the door than to the counter, waiting quietly for the song to be over so she could formally introduce herself. Belle was a bit older than Delia had expected, but that was probably just a result of living on a college campus for three years - when you're surrounded by twentysomethings all the time you start to think that the whole world is like that. If anything, though, the women's age difference lead Cordelia to intuitively trust Belle more than she originally might've; she had a motherly look, and the confidence she seemed to exude was intoxicating. Maybe it was contagious.