What about a visual calendar with pictures of the routine? Just get some images from clip art and put them down the side and have her put a sticker next to it when you are doing the next activity to help her transition, understand what is next. It sounds like building a relationship with this girl would be important and she not only doesn't know you but doesn't understand what you are saying making things extra scary.

I would worry that you don't want to get into a habit of catering to her though because of the behaviour or you may be dealing with this forever.