If your mother intends to visit the US, she must go to the US embassy in her country. The form for her to fill out is DS-160 Application for Nonimmigrant visa which can be found at the state.gove web site. Although, you might be able to do this without an atorney, in the end, you will find that hiring an attorney is the better way to go.
Answered on Apr 11th, 2013 at 3:20 PM