Hi ConfusedAndAngry ~~ I really am sorry that you have to handle such big responsibilities at a young age. I know it must be hard to deal with her cancer and everything else on top of it.
Tell me more about the situation .. do you get along with your step mom, what all do you have to do around the house? Have you tried talking to your dad about how you feel? What about your real mom?
Hang in there sweetie, I know you must just want a normal teen-age life, but sometimes we just have to do the best we can with what we are given.
Much