She was unhappy about the situation and Leon's coma was a part of that. The author wrote, from Leon's perspective, that dragons are very prideful and their personalities cause them to seek revenge and dominance when they feel wronged. Dragons also measure each other's value through strength...
Oh, no! Getting cold like that could give these guys the dreaded manga sniffle-fever. They'd have to be nursed back to health with those semi-conscious skinship/confession accidents.
The only realistic conversation that can be had here is the stepmom telling Rena it isn't her fault. A married parent would not divorce over a rumour without bringing that up with their spouse. That's true even if their relationship is not good. Continuing this direction would simply be...
I'm surprised no one mentioned the tears. They did not look like happy tears when she asked why he's persistently kind to her.
That, and her being perfect at work where personal connections don't go very deep, yet living alone, and her saying "this is the best I can do" alongside her...
Because it:
A) Takes sex out of the equation, and,
B) Shows that those feelings don't change
The easiest way to get there without weird explanations is a time lapse.
Ah! The classic delay... a suggestion that makes the "official date" a not "official date" because it's now a group. All of them will be dealt with in one fell swoop.