Tell them no.

You did what you could when you could. Now things have changed.

Frankly, I see no reason why your former affadavits are no longer valid.

You have good reasons to not continue in this, and since it's your health that is being affected, I would say not to.

It's ok to stop and not go any further with this. I'm sure you would like anyone who was cruel to the pet(s) to be punished, but not at your own expense, imo. Not this time.