Claire helps Jin out of trap, doesn't know it's been 3 years

Out in the jungle, Claire checks to Justin's body and he appears to be dead. She goes to help Jin out of the trap. Jin asks if she's been out in the jungle all of this time and she says that she has since the other survivors left. Jin says that it has been three years and she seems unaware of how long it's been, much like Rousseau and her 16 years. Claire offers to take Jin somewhere safe, but he is unable to walk.

So, did Claire travel back and forth in time with the other survivors after Ben turned the frozen donkey wheel, or did she stay in the present? It would seem that if she was back in the 1970s, she would have been less likely to have been alone for all of those years.