That was me. I’m very pro-sexual fluidity, mind you, but I think it could an interesting story for a restless, searching character like Abby to explore different aspects of her sexuality over time. And who knows? She may realize later on that she prefers being in a heterosexual relationship and break Mariah’s heart in the end. It could also give Mariah misgivings for handing the child she’s carrying over to Abby and Chance. Mariah might have been seduced by the idea of Chance never returning, and she and Abby starting a family together, only to have that have that dreamed dashed by Chance’s unexpected return.
I’m not sure the show as currently written is the place for it, though.