Not tryina complain about her, just can't figure out to fight her. She always dodges my skill shots, has easy escape if my jungler comes and can CC and insta burst me if she's ahead at all. What's her counter play, and who is good against her?
You beat LeBlanc through macro play, not micro play. Your job is to survive and not feed her gold while denying her minion gold so when the late-game rolls around, she can't get anything done.
Before the game starts, take an adaptive damage rune, an MR rune, and a health rune. The extra tankiness will help you survive her combo and keep you in the game. Consider runes like Nullifying Orb or Bone Plating to give you an even better defensive edge.
Shove the wave. LeBlanc's only waveclear is her W, which also happens to be her engage, disengage, and damage tool. In order to match your clear, she needs to W the minion wave (i.e., not you) in order to keep the wave from crashing into her tower. Once she uses it, you can start harassing her with autos and spells to get her health too low to commit. If you think she's going to kill a minion for CS, make sure she has to pay health or mana to get it, especially cannons. When your wave has more minions than hers, you are free to start attacking her instead of the wave.
Don't be too aggressive. If you just mindlessly shove, she's gonna root you when her jungler comes for an easy gank. Push the wave into tower, then back up unless you are absolutely certain of the enemy jungler's location. Use that free time to place deep wards so you know when you have the opportunity to stay and harass her while she cleans up the wave, or go back and buy.
Itemize against her. Your best bet is probably going to be Mercury Treads for the magic resist and lowered root duration. Banshee's Veil is a great pick since it not only gives you magic resist, but also a spell shield to soak up a part of her combo. Once you've finished your core item (for most mages, it's a Lost Chapter upgrade or Rod of Ages), start building MR so you don't die in the midgame when she's at her strongest.
you dont
Ahri is pretty good. If you can predict her dash you can charm her and get some pretty nice damage off, plus dodging the chain with your passive. Also building merc treads and banshees works well.
take two mr runes and get 
Don't let her get too many kills and she seems to fall off pretty hard later on. Communicate with your team when she disappears, try to keep tabs on her, hopefully they won't feed her. If it's me down bot against an LB mid, I appreciate the pings and watch for them cus I know she'll roam esp. if she's not getting kills on you.
Counterpicks can be champs that can fight her headon. 
Since LB has a rather slow speed on her W and a small delay when she has to W back, if you have fast reactions you can play 
and deal more dmg to her than she did to you.
Or you can be a little bitch and stay 40000 km away np, just make sure to not get rooted or you'll die 
