".. the Director of the Division of Personnel charged her with "wilful falsification of documents with the intention of defrauding the Organization".

Isn't falsification the prove of a forgery?

Zu #2,#3:Ausgehend von dem mir Z.Zt. z.Vfg. stehenden Webster's Unabridged Dict., 2nd. ed. wuerde ich
falsification
als Verfaelschung 
wiedergeben (= fraudulent alteration): dagegen Faelschung als
forgery

Falsify = put untruths in the document.
Forge = make something fake, and probably also incidentally untrue- forged passport, forged ID.
One way of falsifying something is to forge someone else's signature.