She followed her in, stopping to gawk at the console room a bit. Not quite like a kitchen now was it. She shook her head and followed her. "Sounds a bit like you're describing yourself. You're not saying you're the Doctor then, are you? If so, gotta ask what you did to the main room that it looks like that now."

She helped herself to a seat. "You're just messing with me now, aren't you?" she asked. So this was Regeneration then. And now the Doctor is a woman. Was that why Heather wasn't here? Wanted to give her a mo to process that on her own? Cause... this lady goes and tells her that the Doctor has a female form then describes herself perfectly as that? She would have said she was just having her leg pulled, except she clearly remembered how she knew the Doctor. And messing with her for what she said to him at the end. Well fine, if the Doctor was having her on, she could do the same.