Not only the rails, off the road too
If she becomes an adult then she becomes faithful, respectful of her children and those of others, refuse Aiden's blackmail, tell his sister to stop acting like a kid, punish her son for his bad behavior, decline Sam's advances, refuse Julia's kiss, not to talk to Meyers about sex ed, prevent her husband from losing everything at the casino, ...
In fact, apart from letigimous marital relations, nothing is going to happen anymore.
You are 100% on the path 'good wife'. In my opinion, there aren't many people like this.
I think most people want her to become playful, curious about teenage experiences, to make lots of mistakes, that's what led her down the filthy path