so she's suing them because the security guards didn't help her?
She needs to sue the cell phone service provider, the dealer/vendor who sold it to her and the cell phone manufacturer. The mfg for making a phone capable of texting, the vendor for selling her the phone, and the service provider for providing her the capability of texting.
This is what anyone who gets into an accident while texting needs to do. Pretty soon texting will disappear. This shit didn't happen 15 years ago when texting didn't exist!!!