first person or 3rd person limited - depending on if the girl is telling the story herself (using I, me, my, etc - then 1st person...if using words she, her, etc - then 3rd limited)
first person POV explains things from the narrators point of view - their thoughts and feelings.
3rd person omniscient is when reader knows the thoughts and feelings of every character.
3rd person limited pov knows the thoughts and feelings of one character