thank you for the comment.
We are still a developing country,the government is not able to pay for the prosthesis.there are lot of people without having any means to afford the prosthesis.but after searching ,found that there is a organization that provide prosthesis at an affordable rate.thank you
Depending on what country she is in there are different options.
In Canada we have a thing called AISH. This is for people with disabilities of all sorts. In Canada she would be entitled to receive a check every month and her prosthesis would be paid for by the government.
I would check with different government departments in your country to see if they have anything for disabled persons.