Hi, as i am italian i can confirm, you can write with no fear, doll, toy or barbie doll.
Don't worry, the doll will not be teared apart by custom, but consider and tell your buyer that if you are sending her with first class mail, it will take at least 30 days to reach her/him. If you use priority or express, you will have a tracking number and it will take from 5 to 10 days.