if he did that, it's illegal, there's literally no defense to that?? that's absolutely disgusting of him, especially since they're a family member. you should make sure they know he's a bad person, reading this made me think that you think 'you're in the wrong somehow', when you're literally the main victim, you should be worried about your siblings and stay protective of them, huge red flags for your stepgrandpa
I love the shading, the arm anatomy is really accurate, I never see that perspective of comparing the widest perspective of the forearm to the thinnest perspective of the bicep