I wouldn’t say so, however Priscilla’s parents ultimately didn’t stop her from being groomed, despite clearly being weirded out by the age gap (she was 14 when she met Elvis and he was in his 20s). There was obviously less awareness about grooming at the time though.
Priscilla never explicitly says 'I forgive you'. But when she does leave Presley to pursue a fulfilling life for herself, in the last shot of the film, Dolly Parton's 'I will always love you' is playing in the background. Even if this is subjective, the choice of song felt like it was meant to reflect a sense that she ultimately saw their relationship as one of love, not abuse. It felt extremely jarring to me watching the film, and I thought I'd mention it here.
Elvis invites Priscilla up to his hotel room between shows to “show her how a man makes love to his wife” she’s saying no and stop, it doesn’t progress beyond forced kissing but still slightly triggering
There is one scene with a loud gunshot at a shooting range, but they lead up to the moment by showing Priscilla aiming the gun, so I don't think it's sudden.