@Ramiro ******

You have nothing to worry about. Although it's not a great idea leaving somebody with dead if you have no choice then that's pretty much what you have to do.

Are you attending a private school or a government school? Did you obtain a loan or is this out of pocket. You will not be arrested on re-entry or would you be denied entry for that reason. Your best option is to discuss the issue with your school let them know what your plans are tell them that you would like to reintroduce yourself to their education system upon return if possible and ask them how you should go about doing what you need to do. Although there are some bad people in Thailand that would try to force you to pay or scam you. The majority of type people. I would say 99.9% Will try to help you with your problem and not take advantage of you.

If she is an untouched virgin. Then maybe pay something. But that is highly unlikely. I would not pay any. Trust me. You will be paying the family in one way or another the entire time you will stay married. They know the value of their daughter marrying a foreigner. If she refuses to marry you then she's not a girl you're going to want anyway.