The Key to Snape?

[potioncat]

No: HPFGUIDX 139156

Valky: 
> This process of elimination puts Snapes Worst Memory clearly in
Lily's
> court. By elimination having her come to his rescue and insulting
her
> were the most unusual things in the memory. 
> 
> OKay I am back on that darn ship again...
> 
> Valky leaps off the plank and swims safely to shore.

Potioncat:
Valky meets Potioncat,who has a LOLLIPOP in her hand and is looking
at it with disgust.

"You too?" Valky asks.

Not yet...but...

Ask not why Snape is mean to Harry and Neville, ask instead why he is 
mean to Hermione. We've seen him around other Muggleborns and he
hasn't 
been particularly obnoxious to them. Who could she remind him of? 
Was 
there once a clever Muggleborn witch in his company? One who strived 
to be the best at every class? One who excelled in Potions? An
insufferable know it all, perhaps? Prefect too, no doubt.