Ramuh.Rowland said:
I saw Cynthia after I beat the Elite Four the first time, then when "haha *** you" and left.
The highest pokemon I had at the time was level 48. I was really underleveled when I beat the elite four. 42-48 I also had a Durant that started at level 36.
There's a strategy where you can use that level 70 fire/bug to wipe out Cynthia. Haven't tried it tho but I prolly will soon.