Whilst Hisomu was attempting to fight against the strain of her bloodline as it continuously regressed - there would be a hinderance as she strained herself somewhat. It was but a momentary pause in the attempt to control her power, but it messed with her mind and attitude just a wee bit due to the prolonged exposure. Her body would flail meekly against the strings as he approached her, but the sudden 'freedom' of movement her left arm obtained sparked an ignition within her two brain cells.
HIsomu's expression maintained a struggling one, one fighting for control as the mark on her forehead regressed away - but it was a rouse, at least partially. It was a devious attempt, but with her left arm free and him presumably in her reach - Hisomu would unleash a wicked response at him.
Flicking. The Student pressed her middle finger against her thumb to build up tension in her finger before unleashing the wrath of a slightly unhinged academy student onto Chikap's chest if successful. Just a mean, but minor, flick of the middle-finger at him. Despite this brief moment of rebelliousness, Hisomu's primary focus was still regressing her transformation and regain complete control.
Now, if she did manage to flick him with her finger, she'd laugh like a dork at him.
"HARH-HARH-HARH-STUPID!" Just as she had called the kid that one upped her stupid. Now, she was calling him stupid - albeit it was probably not sincere. Presumably just the bloodline talking - but if her left arm was still free, she'd afterwards form the seal of concentration. Just a minor tool to assist her in managing her flow of chakra.
In other words, Hisomu's appearance was almost entirely normal by now if everything went according to plan, as even the mark and comically odd nails receded away into the abyss. If Chikap did not retaliate, Hisomu's expression would brighten up into a stupid smile that stemmed from the accomplishment of training but also flicking Chikap if she was successful in that.
"DOING IT! DOING IT! NGHHHHHHHHHHHHHHHHHHHHHHH!"