Her mum, on the other hand, was worried that Hatty would be overwhelmed. On the first day of the 12-week Paris shoot, "Hatty said that she had a tummyache and she came and sat on my lap," says mother Sue, a homemaker. (Either she or her husband, Chris, a lawyer, were with Hatty most of the time, along with a tutor.) "She looked so little, and I could only think, 'Oh, my little baby.' " Luckily, Jones made fast friends with her costars—even those a few times her age. "Hatty's a witty kid," says Frances McDormand, who plays schoolmarm Miss Clavel. "She is very funny and composed—she's really a delight." Jones, whose favorite actress is Julia Roberts, spent break time dancing to Spice Girls and Hanson CDs with the other young castmates. In fact, says Sue, as the fall shoot wore on, each time Mom and Dad offered to take her home for a weekend, Hatty would say, " 'That's all right, Mum—I'll wait 'til Christmas.' "