Original sentence: Spike realizes the truth--that the others kicked Buffy out--and, angry over the gang's betrayal of Buffy, he snaps at them, accusing them of being ungrateful and unable to handle the truth about her
Edited sentence: Spike realizes the truth--that the others kicked Buffy out--and, rightfully angry over the gang's betrayal of Buffy, he snaps at them, accusing them of being ungrateful and unable to handle the truth about her