The Last Train?

I walked to the station today to buy tickets for a train journey tomorrow. I know that sounds like a waste of time but when you are retired everything is different. I used the machine to show that I'm not an old duffer and took great care to buy a ticket for tomorrow and not today and with a senior railcard reduction, unfortunately I didn't take as much care to buy a return and not just a single (which costs almost as much!). So I went to the human being in the ticket office to put it right. The young lady customer in front of me was finishing buying hers and said;
'What time is the last train back?
The clerk replied: 'Ten past midnight.'
As the young lady said; 'That's fine' I imagined a bell chiming and said out loud;
'Beware, Cinderella!
The young lady flushed bright red, turned round and seemed relieved that there was a natural explanation for the voice. covered with embarrassment she said:
'I was just thinking that.'
I wonder did I just made a casual joke or had I been a prophetic warning to her?
She moved on and I explained my inadequacy with the machine and the clerk sorted me out a return ticket and I started my walk home. But I continued to ponder the situation with the ten-past-midnight scenario. After I had exhausted all my Cinderella moments and contemplated what was the message of the story of Cinderella - they often carry a moral. I moved on to thinking about the fact that ten-past-midnight is another day. Would the ticket still be valid? etc.
BOING! Like a bell going off my mind hit a thought with a ringing clang. Did the clerk give me a ticket for tomorrow or today? I found the tickets, they were dated for today! I was halfway home and I would have to go back!
Was the prophetic warning for me and not her? I had the red face now and had to ask yet again for help with the simplest job! Thank goodness I didn't leave it till the last moment, when I shall be in a hurry, tomorrow. I might have missed the last train!
I think the moral is: Never loose track of the time - even if it is going very well.