Have you ever heard of "survivor's guilt?" Usually in an extremely stressful situation, the survivor usually has guilt for being the only person who lived. The person thinks that they should have died, and they look for reasons to blame themselves for the what happened. Whether it really is true or not, the survivor completely believes that it is true.
I have a feeling that she didn't think twice about the gun until she was out of the restaurant. Since she had a gun in the truck, she had an easy excuse to believe that she could have stopped the tragedy. [QUOTE/]
She was given a gun when she was 21 by her friend. It was for her to keep in her purse and use only for self defense. She was a lot older when the incident happened.
The law was passed months before the incident. She wasn't allowed to carry the gun in her purse. She said it herself, she reached into her purse to pull out the gun. She also said the only reason her father rushed the madman was because he saw she didn't have her gun.
I seriously doubt she just thought about the gun after she left the restaurant. It doesn't matter though. Either way if she did have the gun, it would have most likely allowed her to easily put a stop to the situation.
If he was shooting THAT slowly, why didn't her dad run out of the restaurant with her?
Susan and others escaped out the back window which got cracked. The window got cracked after the dad got shot. The madman changed directions after shooting the dad, giving Susan and her mother an easy chance at escaping.