iin stepdaughter offended when i call her on unhealthy eating habits.

I say keep trying. In the long run, she'll thank you. However try other tactics like asking her to go for a walk or something. And by the way, Amy Schumer is not that fat. Now if you had said Rebel Wilson or Gabourey Sidibe, that makes sense. If the girl can still buckle her seatbelt on an airplane, then she might be chubby but not fat.