Camille is frustrating in a BAD way.
You have Singed, who's really frustrating to play against, but offers answers (mostly DON'T CHASE).
Camille just has an insanely long range dash, which means that she can reach you even if you are playing safe. She has 20% of her max health converted into a shield made to block the most effective damage type against you. She has a Darius-esque heal, but it works against minions. 2 auto attack resets. And let's not forget the "you ain't running away from me NO MATTER WHAT" ult, that also works as a Fizz E during cast.
Not to mention the endless bonuses added to those abilities, like a stun, AS boost, 172% AD as true damage, % max health damage, % current health on hit.
The problem is not in stats. The problem is that she has so much shit packed into her kit in such a bullshit manner (crossing 2400 units, even over walls, in less than 2 seconds. Invulnerability while she forces you to 1v1 her. Plenty of % health damage so building health won't help you alot. High True Damage, so building armor won't help you much, etc) that facing a Camille that is slightly ahead or even is a nighmare unless you counterpicked her HARD.