elizabeth elena laguna salgado , 26 , from chiapas , mexico , was last seen leaving a language school in provo , utah , april 16 .
she moved to provo a month ago after completing mormon mission to mexico .
elizabeth smart and her father held a press conference friday to draw public 's attention to salgado 's missing person case .
woman 's uncle said she has told him a young man had been pestering her to go out with him , forcing her to pretend having a boyfriend .