She owned castle trough WW2 (when it was used as a hospital) until her death in 1974, when she left the castle to the private charitable trust Leeds Castle Foundation who had a goal to preserve castle and offer public access to it to tourists.
Official statistics shows Nepal's per capita income was $ 1100 dollars in 2008. An average family has 4-5 persons usually with only one person earning. However, my opinion is the per capita thing has been inflated due to extremely high income of few people.
According to Gallup 2013, median per capita income in South Asia is highest in Sri Lanka $719, then India $616, Bangladesh $616, Nepal $519 and Pakistan $480 the lowest. Aggregate data from 2006 to 2012 was used. Median household income depends on household size.