How can a Romanian woman who was here on a work Visa and has returned home, get back here(USA) legally?

Question

She fell in love here and wishes to return to get married. She will remain here in the USA with her fiancee.

Answer 1

She can apply for a fiancee visa or an immigrant visa after the couple is married.  

Check out this link for more information:

http://travel.state.gov/visa/immigrants/...

Answer 2

Her US citizen fiance will need to petition for her to return to the US on a K-1 visa, unless he marries her outside the US and petitions for her as his spouse on a K-3 visa (obtained in the country in which the marriage took place).

See the following site for more information:

http://travel.state.gov/visa/immigrants/...