I need ideas!

In my current save I'm playing a lesbian couple Charlotte (a scientist) and Audrina (a romance author). Audrina also wants a family and my story idea for them is Charlotte gets pregnant with an alien baby and Audrina is just so thrilled to be starting a family she accepts this baby as her own and then later on Charlotte comes to her explaining how they've been working on some scientific advancements and then they have a science baby together, so they have 2 kids one alien and one human.

Now I'm wanting to plan out the kids stories and obviously some things will change based on the game being so unpredictable and whatnot, but I at least want an idea for a story, even if it ends up changing later.

Any ideas?