Emily Watts' parents, Nicky and Dominic, along with her 27-year-old brother Rory, have all travelled to the hospital in Annecy where she is being treated.
It took several days for French authorities to notify her parents because she was not wearing any form of identification.
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Armed police have taken part in a dramatic training exercise aimed at recreating the chaos of a Paris-style terror attack.
After a remarkably mild November - a notable mild start to the new month.
The Facebook founder revealed the plan as he and wife Priscilla Chan announced the birth of their baby daughter, Max.