Eh, not sure. Then again, I'm the last person who could give you an answer on Batdickery - either I'm blind to it either I justify it either I... am enjoying the resulting drama too much.
Batman wasn't always a dick to Cass during that time period, at any rate. There's a couple of earlier issues dealing with Cass having killed a man when she was a little girl, which feature Batman simply refusing to believe she could have done it. And then later on again, when Oracle thinks it's possible she did, and Bruce deniiiiiies.
The relationship between Batman and Cass is full of oddly lovely/crazy moments; she believes in the Bat as much as he does, and that's not something he ever forgets or takes likely.