Building tiny house

Hi my name is Don, I am helping a lady in Thailand to build a tiny house,

She is widow,has two sons, one is married, the other son is mentally disabled, and needs medicine daily.

She rents a small shop to give massage to women only, she lives in the shop.earns very little, just enough to get by on.and take care of her son.

I have known her for four years, and met her son in the hospital.

Her other son has a small property where we are now starting to build the tiny house. The funds will be used to finish the building the bathroom and kitchen,

When I go back to Thailand I will help build the house myself,