。
She climbed up, hauling herself along the rope hand over hand.
Literal
[topic-は] rope [object-を] pulling-hand-over-hand [while-ながら] climbing-went.
たぐる ('to pull in hand over hand, reel in') is a vivid physical verb — used for pulling on a rope, line, or similar object in repeated grasping motions, like reeling in a fish. ~ながら links a simultaneous action ('while pulling') to the main verb 登っていく. The compound 登っていく ('climb up and away') uses ~ていく to express directional motion away from the speaker's vantage point — useful for narrating a character moving off into the distance.