In terms of making the narrative work for the believer in it - she must have been tempted a short time after arriving on the scene ...........Maybe during the time that Adam was away preparing the "honey-moon" suite for the first occasion of marital "num-nums". Which the "great serpent" must have realised and had to climb in pretty quickly so that a perfect child could not be conceived ? ..........imho
Which may explain why she was so "blonde" about the serpent speaking? She did not have enough street-cred