Domestic Helper has been giving out our address to her friends for delivery purposes

I just discovered that my domestic helper that I have hired to take care of my elderly relative has been giving out my relative’s address to her friends (who are also domestic helpers). This is so all their Shopee purchases will be sent to the collection point nearby for my domestic helper to pick up their parcels, and she will pass it to them on her day off.

I don’t have a good feeling about her giving out my relative’s address to her friends (I don’t know who and how many exactly) and I don’t feel secure. I’m fine with her making her own personal purchases. Thoughts?