We can teach them the Bible. And we can pray for them by name. You can pray that Suni's parents will tolerate her becoming a believer and even be saved themselves. Now there are certainly sacrifices to be made. Bangkok is not the most pleasant place to live.
Few places are as comfortable as home.
Sacrifice is an integral and essential element designed by God to benefit us and the people we touch. On the other hand the fruit is sweeter than you might imagine. It will be rare for you to find a missionary who would not say it is absolutely worth it. The difference is, ours is so intense.