advice on ipod touch fast!

absolutely yes,you can make it and all you need is a three party utility which I recommend Aniosoft ibackup. It enables you to transfer iPod’s music and other content to any storage device and iTunes as well. And both the backup in the storage device can be convered and restored with no any change and no any risk.And the data in the iTunes is quite in accord with the iPod’s data including its playlists,rating and etc. So in your case,you can make a music transfer from her iPod to the iTunes in your computer with this tool and also make a backup for the ipod’s content in your computer as well. Then the iTunes in your computer includes both her songs and your songs(your former songs) and what you need to do is syncing the iTunes to your iPod. There is a note that needs your attention,you have to turn off the auto sync of the newly installed iTunes before you can make this transfer. for your convenience,I’ll add the links here: http://www.aniosoft.com good luck to you.