How do George and Lydia's reactions to the veldt and to the lions differ?

At first, Lydia is more frightened of the nursery's scene of the veldt than George, alerting him to it and then running out of the room as the lions seem to attack them, while he follows her. He reassures her that the veldt is all an illusion behind glass and that lions can't cross into the room to devour them.
Nevertheless, both parents are very concerned about the children's obsession with the veldt. They both feel the children have been spoiled and that buying the high-tech HappyLife Home was a mistake. At the end of the story, however, when George has decided to turn the nursery off for good, and the children are crying, Lydia wavers and asks George to leave it a little longer:

“George,” said Lydia Hadley, “turn it on again, just for a few moments. You need to give them some more time.”

George argues but eventually agrees to leave it on for a few more minutes as he prepares for their vacation in Iowa. These extra minutes, unfortunately, give the children the opportunity they need to lure their parents into the veldt one last time.