Yeah.They can't have only four lines.I mean, think about it.
Snape's having lots of scenes in the film...
Slughorn is another major character...
Bellatrix is having bonus scenes in the film (destruction of the bridge, Burrow attack, Hogwarts invasion and battle).
Yeah, she's not talking literally but she actually means that these fantastic 5-star actors actually take supporting roles in the film and not the major ones because, let's face it, the major ones for the film are the trio and Dumbledore only. Even Draco isn't a lead character.
We'll see!
But she seems fun and she must have enjoyed shooting for the film.
I wonder if she's having the two scenes in the book or even more.