Someone once sinabi that Bonnie was responsible for grams death, is this true? Scene 1 (Grams house) 1x14
Elena - "We need to let him have Katherine back. He's not gonna stop until he gets her, if we help him maybe that ends it." Bonnie - "No he doesn't deserve to get what he wants." Elena - "What other choice do we have." Graham -" ...... I'll open the tomb, you get your brothers girl and destroy the rest with fire. Then this will be all over."
Fact 1 Bonnie didn't want to help. Fact 2 Grams agreed that she would open the tomb, with no influence from Bonnie.