Not if she consented to allowing her employer to do so. My own employer has us sign an additional document (an addendum to my employment agreement) to get emai

Not if she consented to allowing her employer to do so. My own employer has us sign an additional document (an addendum to my employment agreement) to get email/calendaring on our personal devices. (Also my employer is in a regulated industry - trading - where if we talk about work-related stuff on personal devices that don't go through work's logging proxy, the SEC can start digging through my personal text messages in an investigation, in some fashion. I don't know precisely how this works legally, and I hope to never find out.)