In some twilight betrayal fanfiction, there might be a plot where a human character is betrayed by a vampire they trusted. Maybe the vampire promised to protect them but instead uses them as bait to draw out other vampires. This would put the human in a very dangerous and emotionally distraught situation.
One interesting plot could be a character from the Twilight series being betrayed by a long - time friend who turns out to be working for an enemy coven. This creates a lot of internal conflict for the betrayed character as they struggle with feelings of hurt and the need for revenge.
Another plot could involve a betrayal within a vampire family in the Twilight universe. For example, a younger vampire is betrayed by an older family member who wants to take over their territory. This would lead to a power struggle and a lot of drama as the younger vampire tries to fight back and regain what was taken from them.