Urabe has definitely changed a lot since the first episode, but she's also got a lot of that ol' black magic working for her still. She knows who Hayakawa is, and she's not at all shy about treating her curtly, definitely more than she ever treated Oka. Urabe is also genre savvy, and knows something is up. When she was probing Tsubaki for information, she was trying to find out if he'd be at the same place on Sunday. The lie doesn't help, and probably only confirmed Urabe's suspicions more than anything else. I seriously doubt she's going to be caught by surprise by Hayakawa's manipulations, but if a bit of look-alike worship in a magazine can piss her off, deliberate "****ing with" is not going to amuse our Mysterious Girlfriend one bit.
Oka, meantime, continues to be a little shit-stirrer. She didn't mean to blow Tsubaki's cover (she didn't know anyway), but once she knew what was up... yeah, that little bitch. God I love her.
This is also one of those times where I almost felt sorry for that Tsubaki dip. It can't be easy for anybody to encounter someone they had strong feelings for for so long and brush aside everything. Yeah, he's got a new girlfriend, but as anybody who's ever run into their high school flame at a 20 year reunion can tell you, nostalgia is a hell of a ****ing drug. Even if Hayakawa wasn't manipulating him, Tsubaki would be having a tough time controlling his raging hormones, but toss in the shenanigans, and he's basically screwed.