You have many ways to transfer money to another person, regardless of where in the world she lives. Bank wire transfers, transfer companies and online processors are all means that can get money where you need it. Keeping a transfer safe requires more than just using a large transfer institution.
If the company you choose to transfer money does not check the identification of the person receiving the money, you risk someone else claiming the transfer assets. Banks require that you provide the recipient's bank number, bank address and personal address to make sure that the account getting the money is the intended account. Western Union and other transfer companies ask for identification too. Online services do not have any way to confirm if the person who receives the money is the person you intended.
When sending money, regardless of the method, follow up with the recipient to confirm that she received the funds. If she didn't, open an inquiry into where the assets went. If the error is a result of inaccurate information on your part, you are responsible for the lost money. If the error was an institutional error, it is the responsibility of the institution to rectify the situation.
IIf a person does not have a bank account, bank transfers are not viable. Western Union may be used for its speed and PayPal for its speed and convenience. While PayPal is the most efficient, it is the least safe method since you are relying on typing in one piece of information correctly: an email address. Western Union is safe provided that the outlet does confirm identification. Banks can be the least convenient but the safest. They use a series of information about the sender and receiver to verify information with the highest level of consumer protection possible.