she never jumps because the reason she jumps is because the MC sees her groping herself so if you don't follow that plot I don't see the reason why she would, I've already endured 3 years of bullying I don't think anything worse will happen to her
Actually, in my game, I'm pretty sure she jumps. I got to the point where you have to choose whether to establish a romantic relationship or not and I chose not... The consequence is that something very bad and definitive happens to Nea.
If you choose to skip the trans content what Luxee literally says is:
"You'll still have to click on her events wherever you see her in order to progress with other characters"
"But her scenes will be skipped instantly"
From what I gather that the only thing that happens is that the content of Nea happens, although the player doesn't see it. In fact, to check if this is really the case, I decided to go the route where you don't see the trans content, and got to step 5 of Cha'relle, where I knew they were talking about how the MC defends Nea from Eric, I get this:
So it's clear that in that route the content of Nea is skipped, not avoided. Whether Nea jumps or starts a romantic relationship with the MC is another matter (but if the player has chosen not to watch the content, possibly the choice would be not to have a romantic relationship with her)