>>28155581Speaking from experience, it's nothing to sneeze at. I've had very similar things happen to me, usually happening around the same time as other events. She should be fine if she can just not freak out about it, as it won't hurt her, even if she gets curious.
If she decides to move, I hope she realizes that the house might not be the thing that's haunted. It may be her. Or maybe the ghost decides to attach itself to her.