If the volturi attacking Is Alice's vision how could she see?

I don't know how she can suddenly see the भेड़िया या Renesmee - it's quite a major plot hole (though admittedly it is my favourite scene in the whole movie series).

Because she can see the volturi's desion because they are वैंपायर and the warewolves aren't a part of the decion.

It becomes True duhhhhhhhhh

There must be enough वैंपायर present for her to see the event despite the holes in her vision caused द्वारा Nessie and the wolves. And the important decisions were taken द्वारा vampires: first Irina then the Volturi.