She is "falling", so you can expect in the third chapter that she will have sex with his boyfriend, but since he is inexperienced so his technique gonna suck, or is gonna have a small dick, or is gonna be a quick shot, or isnt gonna be able to for 100 rounds without resting or everything mentioned before together, she is gonna turn full "oh, poor little me, what can i do since he can satisfy me? i guess choosing the guy who raped and blackmailed me is the right choice". Not that she doesnt deserve whats gonna happen to her. Unfortunately the author isnt gonna show it.
NTR has turned more generic than Truck-kun isekais.