Well, I think the show gets that people, and teenagers in particular, make decisions that aren’t always the most logically sound. They don’t do a cost benefit analysis, it’s often I want this to be true, so I’m hoping it is. We do that all the time, how many decisions do we make that we know we’ll pay for later, but we’re just hoping it’ll magically work out, sleeping late, eating unhealthy, skipping a class, procrastinating on literally anything? It doesn’t make sense, it’s just the best option in the moment. April herself was falling into that in ep 8 and 9, she knew there was no way she could come out safely, but oh, she wanted it.
But Sterling in particular has led a bit of a charmed life until the last ep. Like, okay, she breaks the rules (sleeping with Luke, drinking) and faces the consequences (school ostracization, mother kicking her out of the house), but the being kicked out of the house was about as gentle as possible, and when her mom found out about the sex it was a bonding moment and the drinking somehow fixed the school situation! So she’s actually come out on top.
She WAS scared about what to do with April, as she told that lady in the throuple, April could tell her parents, but she went ahead and kissed her anyway because in the moment, she couldn’t do anything else. And then she (rightly) freaked for two seconds until even THAT somehow amazingly worked out, against all odds, as we well know. You surprise the most Christian high maintenance girl in school with a kiss, it’s lottery probability not having that backfire badly.
There are some people who make high risk decisions again and again even when they turn out badly and they just spiral. This kid is rewarded again and again, like, I would have understood her optimism even if only half those things had worked out. She’ll think, oh, they’ll be fine, or at worst, I’ll spend a night out on the lawn, but honestly? She’s not thinking of the consequences at all, it’ll work out.