Relationship with step-daughter.
So, I entered into a relationship with a man who was just getting out of a marriage, and he had a seven-year-old daughter(whom I'll refer to as May). We have now been married for three years, and I have a gorgeous 10-year-old step-daughter. I have been struggling with my feelings towards May, and whether or not they are valid. I am sort of resentful towards her, and I cannot overcome that hostility. She is a little whiny, but no more than I would have been at that age, and she is such a daddy's girl. She will often times interrupt moments between her father and I for attention's sake. She smothers her father and will do anything in her power to create a barrier between he and I when she is around. She has the only-child syndrome, and becomes angered by the thought of her father and I having children. Some of the tension probably stems from the fact that her mother and I despise eachother, but I have tried to be myself and really befriend May despite the strain. I can only imagine coming from a household with both parents, what it might feel like to have two separate mother-father realtionships, but I have done my best. I want to build a relationship with my step-daughter, but I cannot seem to overcome my resentment, if I can call it that...is this normal?