We have no ways to know what’s the deal. I recommend you ask her directly.
But if she broke her arm, she can’t clean houses any time soon and can’t really reschedule as she doesn’t know how it will heal and when. My hair dresser broke her wrist and after two surgeries and two casts, her hand is still not ok. She can’t work and it’s been a year. She may never work again. I’d not ask a person who broke her arm when she can clean again. She can’t possibly know.
At this point it’s wise to look for a different cleaner.