This is not that uncommon. If you die before your time or choose to continue your life after you die you will be placed in a very similar circumstance in a parallel reality. Most people don’t remember there previous realities but some strangely remember everything and point out differences that mostly affect them. This girl was put in a reality where the girl she became friends with never moved into that house and never met the girl and went to the hospital for a different reason which blended into her circumstance.