It's almost as if that bit about the vacillating boyfriend was included to illustrate the strength of her resolve and her absolute authority and autonomy.
Very good analysis. Also, the bit about her being raised by just her mom and not missing having a dad--another dig at the donor. His presence and opinions and say are not needed. He provided the sperm and he'll have to provide the financial payments. I can't say I feel too sorry for him though except for the fact that he was probably indoctrinated for a long time to believe that this was his role or lack of role in the world.