I wouldn’t recommend attending her tutorials if you are struggling with the harder questions, not the basics. Her tutorials cover simply the basics, so for the harder questions, just ask a friend or use Google because she won’t help at all. Also, be ready for all combinations of the problems, even some not available on the worksheets. She tends to take combinations of the worksheet problems and switch up stuff to throw stuff you’ve never seen before. Don’t spend too much time on those questions as that can tank your whole test grade. Due to the limited time available and the fast pacing of the test, I got test anxiety a lot over that. Her class is often very hot, mainly for Pre-Calculus. To study for the tests, of course cover all the problems from the test, but you should also try creating your own combinations of problems to improve your skills at unfamiliar problem solving.