> 2. Since libertarianism is, by definition, fully supportive of the rights outlined in the constitution, being anti-gun / gun-grabber / endlessly wanting more government restrictions on what is a fundamental constitutional right makes her not a libertarian. The criticisms levied against her on this front are correct.

Actually true libertarian would think even the constitution as too restricting and prefer the world to be sorted on raw power alone. Realpolitik all day all night long.