Whats happening to Charlotte?
Nosebleeds seem to be a side effect of time travel the precludes death. George Minkowski and Desmond Hume’s consciousness traveled through time. Because Minkowski was unable to find a constant between the two time periods he began to bleed from the nose and later dies. Desmond also began to bleed from the nose as well, but survived by making Penny his constant, with the help of Sayid and Daniel Faraday. At some point during the construction of The Orchid one of the workers began to bleed from the nose and fell to the ground, unconscious. Dr. Pierre Chang is aware that the Frozen wheel is behind the wall and claims that it is connected to time travel. Faraday, at his present age, witnesses this. As the island began to shift in time, Charlotte began to experience nose bleeds. She states that she hadn’t had them since she was a child, presumably on the island. She also claims to have headaches and difficulty remembering things, such as her mother’s maiden name.