sharing Outlook 2011 contacts for MAC (with Outlook Windows 2013)

Hi- how do I share outlook contacts from a MAC? My boss has a MAC and I need access to update and amend her contacts list. The permission she previously granted gave me access but meant I received all her calendar invites as well, instead of her! I need her to be able to give me access to her contacts without affecting her calendar. Any advice really appreciated....Thank you!!!!!! (also I have a dell and windows outlook 2013)