http://www.foxlabs.com/Products.html
This is the stuff you want. If she's concerned she might need to use it ON a dart vehicle or other enclosed space, the foam is probably the best choice. Using ANY of the product in an enclosed space is going to mean that EVERYONE will want to get out real darn quick, though...
Good luck.
Probably risking getting this bumped to Gasbags, but... Concealed is concealed. Yes, her employer can, by policy, restrict her ability to carry a handgun. Read the paper from HR, don't ask for it.
The concealed carry course & license are a great idea. Even if you don't plan to carry, they let the people who make the law know where you stand.