For the life of me I can’t remember the name of this film I just recently watched. Definitely from the last few years. A woman takes her two kids to her dad’s house, she had a twin brother that died, she swears she heard her dad abusing her brother (or mom?) through the vents in the house in her dad’s office, I think (?), he says there was no vent in there. Reveal at the end she pulls away the wallpaper (or drywall?) and the vent had been covered up by the dad. Random memories of it – Deals with mental illness, mom gets admitted to a mental hospital, daughter takes her pills at one point being rebellious saying something like “I’ll never be like you”, the kid finds her grandfathers tape recorder and listens to the tapes every now and then (I believe they are just talking, not music).