That's not my point, which is that the only person really enjoying this visually would be Aiden & even he is at the back of the class. After the tour de force that was the 3rd task & the limitations of the classroom, it could be expected that the 4th task might not be the feast for the eyes that the 3rd one was but watching a woman grimacing & twisting & trying to look unconcerned, (while doing the internal monologue routine?), might not be all that great. I don't know whether the setting would multiply the effect, (I have my doubts) but if it did, this would only make the above-imagined reactions worse.
If she's going to moan in front of the class, which seems possible, there's going to be some explaining to do, as in she'll have to feign a fit, or pretend she's ill, neither of which resonates with eroticism. As I havn't seen the teaser it's hard to speculate further but from the descriptions it sounds like a remote control toy is a real possibility. This has all been done so many times elsewhere. I find myself asking, 'when is this set, The 90s?'