I'm confused about the end of Flash and Arrow this week. 
Why did the Lady Flash scientist sound like she knew who Canary was and that she was dead at the end of the 1st two parter... and why in the 2nd half she seemed to know that Sarah and Canary were one in the same.
Heck... I thought only Nyssa, her dad and Team Arrow knew that Sarah was dead... and only the League, Detective Lance and Team Arrow knew Sarah was Canary.

Why did the Lady Flash scientist sound like she knew who Canary was and that she was dead at the end of the 1st two parter... and why in the 2nd half she seemed to know that Sarah and Canary were one in the same.
Heck... I thought only Nyssa, her dad and Team Arrow knew that Sarah was dead... and only the League, Detective Lance and Team Arrow knew Sarah was Canary.