If she is a time traveler then 2 possibilities came to mind, one good and one bad. The good one is that if she is using a cell phone that she still has to hold in her hand and place to her ear, then the invention of time travel isn't for off fellas. The bad possibility is that is from the distant future and is still using a handheld device. That tells me that there will be no innovations in the cell phone design for a long long time.
