Forum:Plant Food Chain destoryed effect?

My friend and I were having a duel and still am on the Yugioh Virtual Dueling Program.

I had a Tytannial, Princess of Camellias on my side of the field (equipped with Ribbon of Rebirth) and a Queen of Thorns. I attacked her Familiar Possessed - Wynn (Was not summoned by the effect) and she activated Magical Dimension. I activated my Plant Food Chain equipping it to Tytannial. Tytannial would then be destroyed by Magical Dimension allowing me to summon her back (or any other plant type monster). However she told me that I could not bring her back because the trap card was not destroyed by an effect. Is that true?