You know, at first I thought some fans might have been reading a "yuri" context into Vastra's relationship with her housekeeper when there was none, just wishful thinking.
Well, I will delightfully admit I was wrong. That scene left no doubts, whatsoever. Who needs to write "slash-fic" when the series itself makes it official?
I'd love to hear this line, "Vastra? Sometimes I think you only love me for my body-heat!"