For Little Mac specifically:
http://www.youtube.com/watch?v=BWrbBw--YnA
Honestly, if you "camp" the ledge like this in cautious shield, this will instill a lot of fear. My thoughts:
- He has no projectiles, so he can't camp us at all, he HAS to approach.
- Corkscrew Punch charging = Farore's Wind to the face if he's getting cheeky about wanting to make us move from afar.
- You just need one good throw + a sweetspot Dair (even sourspot works if he's higher %) and he's done, as shown in the video above. He really can't do anything remotely threatening to you when he's trying to get back at risk of self destructing himself because of his abysmal recovery.
- Worse case scenario, he grabs you out of shield and throws you... but has absolutely no off stage game whatsoever, so you can just safely come back and put him in another high risk situation again. I'm fairly certain none of his throws even kill.
- You just have to be very patient. They're probably gonna get pretty peeved at you, but frankly as a Zelda player I don't really want to put up with Little Mac's BS when you try to go toe to toe with him, because we're probably gonna lose haha.
And for in general for toe to toe situations:
Honestly, one of the worst places to be as Zelda is the "just out of range" distance, where none of your regular attacks reach but your opponent's do. She does have decent range with her Fsmash, but trading with it is a pretty horrible thing as you'll most likely trade with that crappy 1% mini hit before the launcher one. It's personally one of my least favorite places to be, and I usually back off a bit to be cautious or try to get in a bit closer if I really need to get that last KO or something (that's the tough part naturally). It is however quite safe on shields.
I've found Nayru's Love very effective at people that spot dodge a ton or roll behind you when they get close. The hitboxes stay out pretty long, so it's a fairly good way to punish those, just don't ever, ever use it raw or on shield as it has an extremely horrible cooldown and is incredibly punishable.
Lightly charging Dsmash also is quite good for cheeky folks that love to roll into you as well. It's a bit harder to do on reaction, but the payoff could give you a KO or set one up after all. This also works for Fsmash too if you notice they like to spotdodge a lot.
Hopefully that sorta helps!