That must be frustrating!!
Speaking from a Year 2 BT point of view, sometimes its hard figuring out things with your release teacher, depending on how much they do and how many things you have to fit in. I know that for myself, teaching a Year 8 class is insanely busy, and I need my release teacher's support in getting through all the curriculum. One day out of 5 is a lot, especially when another one of those 5 days is spent on education outside the classroom, plus technology and languages and stuff like that. So there's not a lot of time left to fit in everything else!
I know it must be frustrating for you being an experienced teacher, but I guess the BT is feeling very responsible for her class and wants to make sure it all runs smoothly. She is probably stressed out and worrying about continuity for the chn, and getting used to being responsible for "her class". No reason for her to be on a power trip, but I'm sure you can remember the uncertainty of being a BT, and all the new things you have to deal with!
I plan for my release teacher (thats the way my school does it) as we're usually covering specific topics and the timeframe is very tight. It's actually frustrating for me too, when I plan work and it hasn't been taught - though I realise that each teacher teaches differently, and the way I do something isn't necessarily the way my release teacher is going to do things.
However, in playing the devils advocate a bit, I DO think the BT is very lucky to have you as her release teacher, and I do think it's going too far getting you to show her your planning in advance! Did she say why she wants this?
Try not to let it get to you too much!!
ETA: Oops, that was a bit of an essay, sorry about that...
Edited by arohanui