How long will take direct flight fom lagos to nashville TN ?

So how long dos really take of a direct flight out Lagos to Nashville,TN USA my sister left airport Lagos yesterday 6/10/06 to fly to Nashville a Direct flight. How i know she coming here Nashville BNA airport havint hard from her of the last text message she send 10:12AM my time USA where she said she got Lagos airport at 1:30pm afternoon and was lot people there but havint hard back so if she buy ticket 1,600.61USD is that 1 flight direct flight from Lagos to Nashville TN? so she be here by monday 6/12/06? she buy ticket on june 8 .