Easy just tell your wife that not all Farangs are wealthy that you just a poor Farang that can provide for her and not the rest off the family.
They can either like that or Lump it.
I told Lady Digger that and it slowed down the money hunting I just keep telling them No f,,,n way. One son borrowed some money to buy a car ,told him pay it back or you get kicked out off the house that I built for your Mother and me.
Paid back in full plus a thank you.