She doesn't email. All the emails I have sent her before, she always called, and never replied by email.
That okay. You just send e-mail and if she call to reply, let answer phone pick up and keep the message. You just not speak direct to her because then you not able prove what was said. But your e-mail and her recorded reply is proof of conversation.

Before recording conversation, you have check laws in your province. Some allow recording as long as one side permits - that could be your husband permitting recording he making. But some province not allow recording without both people agree - that why sometimes when you call companies the message say "recorded for training and something purposes" because they then have informed both side and by continue with call, the other person is consenting to being recorded.

This horrible situation. I hope you know that most provider not like this. Yes, we in business for the money like all adult to pay bills but most of us do care about the children too (maybe too much sometime) and most of us value good client and work to keep them.

Where are you located?

Maybe provider on here in your area and you can check out their posting history to see mindset better. Maybe someone here be able recommend too. I in PEI and good network of other carer and we refer people all time when we not have spacings.