I've read your story and I know the feeling of wanting to let them know. I did - but in a way that I hope didn't cause offence....I just said that I can no longer adhere to their beliefs because what they teach is false & I cannot & will not be indoctrinated any longer - all my witness family know & the sense of freedom because now I don't have to hide my true feelings.
Something I hate is LABELLING - the wittnesses do this and I reckon some of us carry it through. We are not apostates.....they've labelled us that - we are normal people that just don't want to follow their way any longer.......
I guess all I'm trying to say is that the real you wants to be free to do what it wants to do in the open.
Throw the book away - you know you don't need.
What that man (he doesn't deserve the title of stepdad even!!!!!!!!!) is sick & disgusting. Yes you are extremely brave to forgive him, and he has the freaking gall to send you a jw book. I'm so pissed off for you right now - I want to break something.