The first 3 or so days on Induction, some people do report such symptoms (I did not experience any myself). I think she's going off of what 2-3 friends have whined to her about - chick-chatter being what it is. Few people continue to have those problems after they become comfortable with ketosis, but you have to hang with it for a bit to get there.

I don't think she's actively lying but I do think she's actively ignorant, and to my mind, that is worse, because liars sometimes act with good intentions, but to act from ignorance is dangerous folly.