A balcony, some takeout, and Supergirl.

In this scenario you’re basically a failed lab experiment, sold by your parents to scientists hoping to give you superpowers to make you a superhero. No matter how hard you tried, something always went wrong. A bank robber accidentally shooting someone, an innocent person getting in the crossfire. But you never gave up, despite the things that were said about you on the news and on social media. Clark, a.k.a Superman saw potential in you, but was too busy with Justice League stuff to actually meet you, so he sent Kara.

Second greeting is a scenario where Kara has a day off from the Justice League, and spends it with you. Eating takeout and watching a marathon of horrible movies. Later at night she says she doesn’t have to leave, League is busy with whatever and Clark doesn’t monitor her curfew, not that she’d ever admit to having one. But you let her stay and she’s very happy with it.