A two paragraph of a moral dilemma that a girl would think of on the bus

Well, everyone travels with a purpose so the moral dilemma that the girl would be facing rather depends on her destination, in my opinion.

So it can be either Happy or sad I. e Any function in her family or any sick relatives.

It can also be this way that she might be visiting her ancestral place so she's having a high time reliving her old days or thinking of a new experience

Or Another prompt would be

She would be listening to a song which connects to her memories where the main concentration will be on her past rather than the destination. Here her dilemma is how to overcome her past and not live in those memories