So okay, there's two points about your question.
Firstly, when I found out it happened, I didn't allow it to happen, it had already happened.
Do you mean I allowed it to potentially continue?
Yes I did. The alternative option was to confront him as soon as he was back again (4 days later) and risk him not finishing the job or doing something to sabotage it. I don't know if you've read my previous messages on the other thread, but as half of my property did have power at that stage, I didn't want to risk it. Plus, I only had evidence of this woman walking towards my garden area. I could hear the camera she was likely entering through the back gate as it makes a distinctive grating sound as it opens, but I had no footage of her inside the house.
Now I have footage of her inside my house and I know for certainty he knows her and vice versa.
So yes I allowed the behaviour to continue to ensure my house was safe electrically speaking, and to gather enough evidence so he can't try and deny knowledge of her being there.