You're a fucking idiot.
I'm volunteering my time here to help you understand why you were punished and how to keep it from happening again. If you are responding to me this way, I can only imagine how you act to a toxic player in-game.
I muted her. I talk to enemy team.
YET i'm the one being toxic.
Muting someone who is being a problem in chat is the correct approach, but what were you saying to the enemy team? Where you accusing the Annie of being a troll, threatening to report her or lobbying for reports?
IF IM FUCKING TOXIC THEN SHES FOR SURE FUCKING TOXIC!
Nobody said she wasn't toxic, and this game may even lead to her being punished later. Punishment is not about "I got punished so they should be too", it is based on the severity and consistently of their behavior, and prior punishments they may have received. Everyone has bad days, and Riot isn't going to punish someone just for a little negative chat once in a while; what they punish is when you're being negative in a large percentage of your games, consistently being a problem for other players. There are 4 tiers of punishment, and each time you get punished you move up a tier, while extreme behavior may result in skipping steps.
Step back a minute and cool down so we can have a logical discussion. If you want to discuss your punishment you can post your reform card with chat logs (if for a chat offense) which would be presented to you in the client and sent to your email.