As far as avoiding legal issues around paternity, the scheme wouldn't have worked anyway. While it may have kept true dad at bay, if Lorena had applied for welfare, the state would have been after both men with a DNA kit in a flash.
Lorena wanted Karah to be biologically related to the child, so she suggested asking Karah's two brothers if they would donate sperm. Only one brother agreed so Lorena used his sperm and that of a friend. Kara helped with the first insemination procedure; Lorena did the second all by herself. News reports don't say how, although a turkey baster seems likely.
Lorena gave birth to a daughter in January, 2008, identified in court records as R. The parties filed a "declaration of domestic partnership" (same sex marriage was not then legal in Oregon) a few months later. But by 2012 domestic bliss had fled, Karah sued to dissolve the partnership, and have herself declared one of R's legal parents. While Lorena denied she ever intended that, a lower court ruled for Karah that she was indeed a parent of R. However, last week the Court of Appeals sent the case back to the lower court for another hearing.
In Mamma Mia made 40 years later, a young woman in Greece, Sophie, learns that three men played by Pierce Brosnan, Colin Firth, and Stellen Skarsgard could be her father. Unbeknownst to her mother, played by Meryl Streep, she invites the men to her wedding. Although DNA testing is available, the film never resolves the paternity question. The underlying premise of both comedies and the Madrone's scheme, that the identity of fathers is irrelevant, is flat out wrong. Who your father is matters. It's not simply a cheap joke. In some countries, anonymous sperm donors are outlawed, so that the individual conceived through modern methods can know who he real parent is--not just some phantom donor picked out of an album. Children conceived of anonymous donors finding each other and some, the father, through the internet. We are adamantly opposed to anonymous donors to conceive children, whether the donor gives sperm--or an egg.
Doctors use family health histories to help them diagnose diseases. Our personalities, talents, and interests are shaped by our DNA. Knowing birth relatives helps us understand why we like what we like and do what we do. Learning about our ancestors gives us a perspective on how we came to be. We may learn things we have a hard time accepting. This was actor Ben Affleck's experience who learned on Finding Your Roots that an ancestor owned slaves. Still, it's better to know the truth even if it is not pretty.
We have no problem with women having babies without a sex partner--but we oppose to treating fathers as irrelevant. Children have a right to know their biological origins and have a relationship with those who provide their DNA--jane
Lesbian partner isn't 'parent' of baby born through artificial-insemination
In the Matter of the Registered Domestic Partnership of Madrone v. Madrone
Buona Sera, Mrs. Campbell
Gay moms want sperm limits in The Kids Are All Right