I have her office and home phone number, as well as her email address. She has a cell phone but doesn't use it and so she thinks it's a bad way to try to reach her because it's off most of the time. On her answering machine is a number to reach a crisis line after hours. I email her a LOT and call her when I need something (usually my little ones call her when they need to be reassured, it's about a 2 minute conversation). I have never called her home yet, but my roommate has when she's been worried about me.