iMore

So today I finally got all my music up and running on iTunes match. My wife and I both share a iTunes account and both have iPhones. Now just a while ago I was scrolling through all my playlists it had synced over. In order to narrow it down I deleted a bunch of my wife's playlists from my phone. Now I was thinking it would just delete it from my phone and no where else-I was way wrong! Not only did it delete it from her phone but it also deleted from our iTunes on our PC! Did I miss something here? Is it supposed to work this way?