Stay at the station where she got off. If her family lives nearby, the chances will be better.
Take that bus again, and you may meet it.
4. Take a selfie or post your experience of sleeping on that MM's lap to find someone online. In fact, she didn't respond when you slept in someone else's lap? ..........................................................................................................................................................
5, waiting for the fate of the next encounter in the vast sea of people.
To tell the truth, the chances of success of the above methods are slim. Good luck!