Until the quad wedding rehearsal, where Sheridan began to think that she will go insane just like her grandmother who lost her mind because of losing someone she loved. Sheridan then discovered that Vicki and Vincent were planning on feeding everyone poison mushroom sauce at the rehearsal dinner. Sheridan contemplated allowing only Fancy to eat the toxic sauce, so that she could be with Luis. But, Sheridan decided to do the right thing and confronted her psychotic nephew and Vicki, until they put a gun to her back and threatened Marty, if she told everyone about their plan. Vincent and Vicki locked her in the church closet, as she screamed for help, everyone she loved began eating the poison sauce. She was let out of the closet by Esme, and the two, were able to hold Vincent and stop Vicki, but it was too late, everyone was poisoned. Sheridan tried to get Luis to get up and move as Eve said that would slow the effects of the poison, but he asked Sheridan to save Fancy, and not him, and that she would do it if she really loved him. Sheridan tried to stop Vincent from killing his mother, but she was forced to eat the poison mushroom sauce by Vicki, and died with everyone else, but Tabitha will sacrifice her magic to save everyone. In the July 23, 2008 episode, Antonio returns to Harmony alive and well. He explains to Sheridan that he was being held captive by Alistair all these years and was only able to escape after the guards stopped getting paid following Alistair's death. Sheridan has decided to start a new relationship with Antonio after he convinced her they were soul mates.