Ooh, I think I'll talk about Irgon and Katie for this question~. The two are an interspecies couple, with Irgon being a human-like alien and Katie an eldritch being from the abyss of space. The two are deeply in love and wanted to have a family together. Unfortunately for them both Irgon's home planet greatly looks down upon interspecies relationships and makes it extremely hard for an interspecies couple to adopt. The two struggled for years against red tape and discrimination from every organization they asked, and eventually Irgon, out of desperation, took a less than moral avenue to 'adopt' a child.
She got in contact with an alien trafficker over the internet and asked for a baby. Unbeknownst to her the alien was a keronian, who in turn smuggled her a keronian baby. She tried to give the tadpole back but the their meeting was interrupted by approaching police, so the two bolted, and Irgon ended up bringing the baby back to Katie with a made-up story about a closed adoption.