Kind of puts her between a rock and hard place nevertheless. Self-inflicted wound or the beginning of a major change in mindset - time will tell. Many permit applicants will be quoting her "infamous" words.
The interesting thing about non-terrorist shooters is all they need to see is an armed response and they typically shoot themselves. The CA terrorists MIGHT have stood their ground against an armed victim like they did with the police, but I think they would have been so shocked at an armed response from one of the attendees at the party that they'd have bolted. They did leave the scene because of the fire alarm going off, so I have to believe an armed response would have had some impact.
In a huge decision authored by Judge O'Scannlain, a split panel of the Court of Appeals for the Ninth Circuit has ruled that Hawaii's ban on open carry outside the home in that state violates the Second Amendment under any level of scrutiny. The decision, Young v. Hawaii, can be found here. The decision is very scholarly, carefully reasoned and a powerful statement that the Second Amendment is not a "second-class" right or a constitutional "orphan."