I know that you have to go through them again if you lose to one of them, but if you lose to Cynthia can you just go to her? That psychic guy's Gallade like KO's all my pokemon... I barely got passed him last time, but I also would like to get Ice Beam for my Empoleon. And I don't have that many ethers and PP ups.
Yes, she´s part of Elite four (which is a little weird too), so as said by guy by entrace "But if you lose you´ll have to go from first one again"
Yes,you need to do all the elite 4 to get to her and if you lose on any of them you have to start from the top.