Oh, but she's only distancing herself because she thought Okabe and Minoru had a thing, in other words she's starting to be more aware that he's a boy close to her and probably feels a tiny bit jealous there.
Unfortunately I was rather more interested in the Okabe x Minoru pairing that was put on indefinite hiatus than the bland Hiroko x Minoru.
I'm okay with Hiroko x Mino
ri though. Bait and switch yuri yay.