In the interview after the LP Rachael herself said that she was going on vacation after Worlds and getting ready for school she also said it would take about a month for her injury to heal.
I assume she knew this before going to Worlds. For whatever reason she decided to skate I feel bad for Rachael skating in that kind of pain. It was not like she was a favorite to medal.
Was it for the 3 spots? Unless Rachael or her coach shares with us the reason behind her decision to compete we can only speculate on their reasoning. For now I will just accept that
she was not in good shape, skated injured and bombed, that is fact.