I love the evolution of Sarah-as-Cosima here. As soon as she realizes she has to talk to Leekie, first she just awkwardly laughs, not knowing what the hell to say, so quickly puts on the most obvious of Cosima’s mannerisms, talking with her hands and a rough Valley Girl accent. And then almost immediately realizes she can’t lock Cosima into anything and then negotiates on her behalf, totally knowing she’s been found out by Delphine and sailing through anyway.