She's probably going to ask you questions about what you've done in the past as well :)
Simply means to see how much you are capable of doing with your riding right now. Good luck to you!!
That's absolutely not what evaluation means. It does not mean she'll make you jump higher or do more complicated things that's very untrue. It
Jumping higher or doing more complex moves in dressage
She'll just be seeing what level you're at with you're riding and she'll be evaluating you. Seeing which horse to put you on and just get a feel for your skills.
I'm guessing the coach will just be seeing what you can do and how well you ride, mabe trying you on different lesson horses
Just basic skills I think. Like when I first started at my new barn she had me walk, trot, post, 2-point, canter than do some figure 8s and other steering work. But it might be different at you new barn