Your fiancé is free to apply for a visitor visa. She would start the process by filing Form DS-160 with the U.S. Department of States. However, under the circumstances, she is unlikely to be issued a visa. A consular official will likely debt the visa application for immigrant intent given the purpose of her trip and her lack of ties to her country. You can read more about visitor visas at http://myattorneyusa.com/travel-visas.
Answered on Apr 29th, 2016 at 4:09 AM