Shalom Brother Ya'acov! This is interesting. We get more the impression that Thais don't want us to know their language. They prefer to speak English then to answer in Thai.
I asked my Thai teacher, a woman, to read with me the Scripture of Mark in Thai and she did it. Is it possible that you could pray with your family, that she can accept Yahusha as her Savior? She is a very poor Buddhist and so lonly. May everybody be greatly blessed. Thank you so much.