She exactly said "during that attack". And it is Harry who called it a lie, not me. Besides, she talks about "no replacement",implying that it is too damaged.
Also, The_Sibelis yes, that is my point. Harry know is a lie. If he thought Evanna couldn't lie he wouldn't have said it so easily. Imagine the same scene, Harry points a Mab, Mab says something and the inner dialogue says "Mab politely lie". Wouldn't all of us scream?. As that is not what happened here, it is clear than Evanna lying was nothing that shakes the core of the galaxy.