It’ll pass, I promise. You WILL get out of this! One more year and you can escape. And your brother will get away too, because the bitch will kick him out. Best thing she could do for him; and you’ll still be together in a much nicer home from home. You’ll never set eyes on your stepmother again, and good riddance. The aunty you go to will become your beloved 'second Mum' for the rest of her long life.
You might as well save yourself the trouble of telling all those lies to the girls at school about your fictitious boyfriend. They know you're making it up, even though they smile politely.
And you really should stop with the cigarettes now, not 30 years later.
But don’t worry, it’ll all work out in the end. You will even be a published poet eventually.