If you don't like her looks check her refid(when you click on her in console) and then type:
showlooksmenu refid(the id you see when you click on her)
to open the character creation menu
To load the mod into the game edit this file: C:\Users\<Your windows user name>\AppData\Local\Fallout4\plugins.txt ...and add Diane.esp to the list of mods to load. Make sure to mark the file as read-only after you edit it! or Use a mod manager.