From what i have read Ellie is not controllable... I was watching the Naughty Dog interview on G4 live today and the game is not so much about speed as it is about ultimate choice.
The demo they kept showing at E3 was all about the interactivity of these different paths, the way they are playing it has a great scene where Ellie picks up a brick off the ground in live time, as the main character is fighting a room full of people, throwing heads into walls etc. Ellie flanks them and when she realizes that the main character has no ammo, so she beans this guy in the head from behind... now what would happen if they had sneaked through with stealth, or not gone into the brick room or skipped the area entirely... the huge variety of different paths is what makes it cool, that and the BRUTUAL hand to hand system....
You have to weigh the risk of taking on a group of people... okay i have 2 revolver bullets, and a Molotov... should i skip these guys or shrug it out... they don't know that you only have two bullets until you pull the trigger....CLICK.... the melee guys turn around and charge your butt..... From what Naughty Dog were saying today its going to have great AI....
So between Last of Us, Black Opps II, F1 2012, Assassins Creed 3, and BORDERLANDS 2, its going to be a very busy upcoming year.
Pirates-ECU