I left off watching when Jane and Lizzy were staying at Bing's house, so I met Caroline, but didn't get much farther than that. (Also, somehow on Tumblr I saw Darcy? The reveal is . . . predictable in a sense--I'll be interested in your take [speaking of which, still haven't had a chance to read carefully your take on Code Name Verity! Later today . . . ])

Anyway, what I was going to say was, in the book, Caroline is opposed to Jane. In LBD it's hard to tell, but I got the feeling in the two episodes I saw that maybe she was just pretending to be Lizzy's friend? And if so, wouldn't that be motivation not telling Bing that Jane is for real?