We can only speculate what transpired between Ambiance and Jenn, all I can say is that I have been following Jenn's reviews for the last 2 years (never got an appt, she's too far north for me), and Jenn is a great provider so I don't think the reason MsTori "sent her packing" is because of she's a bad provider. Could be any other reason, but not that.
Also, Ambiance is one of the best agencies around from what I have read, so maybe the way these two people do business didn't jive, that happens a lot more than you think. Just because you have two respectable people, doesn't mean they can go to business together.
So, the way I see it is not that something BAD happened, but rather they parted ways to avoid something bad from happening.
Be safe,
Elm