Bots in ranked

I just finished a terrible ranked game as a support of a bot and this is not just a suspicion , I am absolute . In the champion selection everything was fine she used the chat without any problems and there was not even any kind of tension in my team . Nevertheless when the game started she was acting strangely . First she left far before we had secured the jg camp and when we got to lane the only thing she would do was just walk back and forth using abilities without an apparent reason , missing almost all the creeps and going in as if she was trying to suicide (and she did died 3 times in the first 6 minutes). I tried to talk to her several times asking for an explanation but I got no answer at all. If that is not the case she was probably a player who muted everyone in order to int. Finally I would appreciate it if you could tell me a way to report her because my client crashed before i was able to do so. Riot , i want you to know that that kind of behavior in ranked games should not be tolerated and maybe its time to get a little more strict . -AnastasRA1