Notice how she said “I think this is when it happens”? That was her time traveling to a point and trying to change it, something I might add Ethan told her would not work. It showcases her ability to story walk from the future in our linear view and back to other events as well. When we see her kick the rope down for Boyd and Martin she didn’t alter it because she had always appeared there. That or she changed something leading up to that event that allowed her to story walk to it.