If you get married before she gets her visa, she would not be getting a fiance visa but you would need to petition for her after you are married as your spouse. For a fiance visa, you would need to get married in the US. It is currently taking about 9-12 months for the fiance visa and about the same amount of time for the spouse visa, but you would not be able to file the spouse visa petition on her behalf until you were legally married.
Answered on Sep 23rd, 2013 at 2:52 AM