If you no longer desire to be a vegan, just be honest that you wanted to stuff your face with animal flesh, lactation, or embryos. No one can knock you for sharing your sincere feelings.
But if, instead, you take the Goodwin route--scapegoating on "health" issues--you only reaffirm the damaging myth that vegans are necessarily weak or somehow nutritionally lacking. And let's be real, her feeble attempt at saving face didn't work. This interview is obnoxious.