how to clear contact list

My daughters MacBook Air contact list shows 29 V cards... however if you go in and start typing an address, all of my work contacts are listed.

Somewhere the accounts are linked... however I can't see where. We have just her email and iCloud connected. Mine was never connected that I can recall. The only conection that should be mine on hers Air should be my iTunes account for purchases.

Anyone have any ideas what I'm missing?