Im sorry to say, but I thought about the same thing. I guess that the only way to know for sure would be to have either the PI check on her periodically or have a friend who could report back to you.
I wonder if it wouldnt be better to wait until you are here long-term to set the deal-breaker boundaries. Maybe now you could do the whole "I know whats going on, and its incredibly disrespectful", You could cut off the financial support for the A, it will most likely die a natural death- they almost all do- in a few months. Just something to think about I guess.
I guess I gave the wrong finger to the wrong man...