Well, I don't think that everyone experiences everything the same way. And it may be somewhat connected to why a client leaves - you left, as I saw it, because she was not meeting your needs and you were angry (which I think is perfectly reasonable considering your description of your interactions with her) - so the warm fuzzy leaving was not as likely as two people who decide their goals were met and go to celebrate the accomplishment and acknowledge that each will grieve the necessary loss of the other.
Just my thought on it. It does not sound good to me, but it is how I would put what others describe can happen.

I admit I don't feel unequal to the therapist so I don't know about that.