She didn't have the option of waiting to meet Mr Right and fall in love and all the stuff that follows before family planning starts coming into the picture, she is a lesbian. She did the right thing by going to a sperm bank and starting a family by her own choice. She didn't do anything illegal or morally wrong, unless you have something against lesbians and their right to have children, but thats a whole other thread....
I can't see what the problem is with the story?
The 2 women who used a man with promises of not making him pay and then turned round and made him pay is plain evil and nasty but then he shouldn't have agreed to it in the first place.