Or it may be that she has never truly been on her own and always had someone to fall back on at need and this time, whatever happened, cut her off completely and nobody was aware it happened so nobody who might have tried to find her actually did. But yeah, being cut off from everything she ever relied on and being forced to rely only on herself to get out must have been a huge shock as she strikes me in the flashback with klaus, as the spoiled princess type. She is used to using other people to accomplish her goals and boom, all of that support was gone.