The ability allows Wells to manipulate time specifically delaying and slowing down time. It also allows her to send one people's consciousness into the past just once, but it can also manipulate the flow of time in the area to a certain extent.
The ability is a reference to The Time Machine, a science fiction novella written by H. G. Wells in 1895. The story popularized the concept of time travel. The story is about a Victorian English scientist and inventor called as the "Time Traveller", told from a third person narrative. The novel was adapted into three films with the same name, two television shows, and many comic adaptations.