@john74,
I'm sorry, don't mean to insult you, but this strikes me as completely confusingly dumb. She is still two, isn't she? To me, that is almost a kind of willful torturing a toddler to somehow train her. People here have told you that her behavior is usual for two year olds. You are making this all about yourself. It is, certainly, about yourself and what you are going through, but the key person here is your child.
Did you ever follow any of ehBeth's suggestions about reading books on child development or getting in with a single parent group locally? I don't know the best books myself or I'd list them for you. Do you have a local library? You do have a computer - you could look up books on Amazon or other book sites and read the reviews.