GUNS DON'T KILL PEOPLE, OR DO THEY?

[SIXFOOTERsez]

Yes, SYG doesn't come into play other than she was not in her own home. SYG, Castile Doctrine in Florida now extends outside the home which allows the defender to take a weapon outside to come to the aid of another.
Once she was attacked, it comes as simple self defense
She is on solid legal ground