Your T sounds pretty unreasonable treloarbabe. And she's wrong, it is not black and white thinking - she is making no adjustments and showing a clear lack of understanding (e.g. resistance in rescheduling, no preparing the space ahead of time or giving you that extra time as an ad-on) - what is black and white about that??

And 10 weeks off is a lot (in my books).

Do you like and/or want to continue working with her?