My fiancee's iPhone 4 has stopped vibrating. We plan to go to the Apple Store but the thing is she has never done a backup. She's been using her iPhone completely untethered from iTunes. Now, when I plug her phone into my Macbook, it gives me the option of setting up as new or restoring from MY backup. Is there anyway I can either have iTunes make a backup of her phone onto my computer or better yet leave her info alone? Thanks.