I don't know why you're having trouble with her. Just pick a character with either semi-decent mobility, or semi-decent range so that you can just sit right outside her land-cancelled Nayru's range and punish everything she does. I don't know if you're just unfamiliar in the MU, but once you learn her bull ****, she is super easy to shutdown. Sheik, Marth, Fox, Falco, Link, Ike, Wolf... the list goes on, are super difficult MUs for her. Ya she has some dumb gimmicks and can combo pretty hard once she gets a good hit, but as long as you just keep her pinned down in the neutral, she can't get anything started.
What Zeldas are you playing that are giving you trouble? It seriously baffles me how many people I see who don't know how to fight Zelda.