@crazybars its a slow buildup... there's only 10 chapters at the moment, shit hasn't quite hit the fan yet.
actual novel chapters published over the course of 2 years before being compiled into a book.
Well @Random_Passer-by it might be due to the trauma of her first time. There's a female sexual dysfunction called vaginismus that matches her problem, although one of the main simptoms is pain wich she doesn't have (up to this point in the story). Some doctors have proposed that this variation falls into a different diagnosis called vaginal penetration phobia (VPP)
Why doesn't she just go see a doctor? Is it because it's too "shameful"? Pretty dumb to sacrifice your health and relationship quality just because of that.