It could still be bed bugs. Not saying it is bed bugs but may want to really check thoroughly in between mattresses and every nook and cranny of the bed. Is she getting new spots every morning? Could also have her wash and dry all clothes on hot settings and then have her sleep in another room for a few nights. If she doesn’t get any bumps while sleeping in another room but then starts getting them again after moving back into main bedroom you likely have your answer.