The only part of Twilight i dont like

We are reading the book 2 Jacob from Breaking Dawn and I think Stephenie Meyer really dropped the ball. I have enjoyed reading and this is the first part of my experience i am not pleased with. I like the story being told form Jacobs point of view and its a nice choice. The problem i have is with how Meyer sets up the confrontation between sam in the Cullens. So Jacob hears Bella is back and sick so he proceeds to go to the Cullens and kill Edward because he believes she is sick from becoming her transformation to Vampire hood. He tells Sam and the rest of the pack but Sam tell's him no and sides with logic and the fact he believes the Cullens are not all that bad. Jacob goes and finds Bella pregnant and re frames from killing Edward and returns to the pack. The pack reads Jacobs mind and see's what he saw. This is when Sam decides to Attack the Cullens due to the Fact this creature inside Bella puts the people at risk. I like the idea of Sam and the rest of the pack he has fighting the Cullens for the pure fact of how glorious of a fight it would be but the setup is weak and lame. Sam tells Jacob not to attack and tries to use logic by telling Jacob we need facts Bella could really just be sick. Yet Sam wants to attack the Cullens with out any fact of what this creature is. There was no Truce broken. They have no clue what this baby is for all Sam knows it could be Jacobs ha ha ha not really but that would be a great twist. I think Meyer's tried to portray Sam as a composed intelligent leader that looks out for the best of his people and his pack. She makes it look like Sam weighs all the sides of a problem and decides on fact but in this situation he reacts like Jacob. She makes Jacob act on  impulse but in this situation Jacob seems to act more like Sam is suppose to .