The woman is really taking her chances on being caught by the taxman. I would bet all of her clients are claiming the childcare costs on their taxes and that's how they would be able to catch her. Unfortunately that doesn't always happen.

I understand how it makes you angry but what you know is heresay and rumours isn't it? If there is a parent you know who is upset about not receiving receipts from her, then the parent should report her. Now if she were breaking the law with 10 children in care you could see that with your own eyes and you would know the children's lives may be in danger so then I'd report that situation.