Task: The Hike Plan Docs should be accessible to maredharris@gmail.com so that she may contribute some further suggestions.
Steps:
Click on the menu icon at the top left of the screen
Click on the share icon
Click on the share icon
Click on Send Document option
Click on gmail icon
Enter  maredharris@gmail.com as the recipient's id 
Click on the suggested email id
Click on the send icon