San,
sajha has visitors from different parts of world (US, UK, Australia etc), i am not sure if other part of world helped in raising money for this cause, however I don't think it is a good idea to just say "US", may be  "Sajha member" would sound better than just  "Nepalese in US".

just my two cents, but again, i congratulate you and whole sajha family  :)

cheers