Crystal reappears in stop-motion animation in Rudolph and Frosty's Christmas in July, in which she and Frosty now have twins, Chilly and Milly. When Rudolph's friend, Milton the ice cream man, reveals that his girlfriend's mother, Lilly Loraine's circus is in danger of foreclosure due to heavy debt, Frosty offers to take Crystal and his children with Rudolph to help out. However, in order to do so, the ice wizard, Winterbolt, gives Frosty, Crystal, and their twins, special amulets that will keep them from melting until the 100th firework from the Fourth of July celebration goes off. However, when Rudolph learns of this, he takes the blame for the theft of the box office earnings, under agreement from Winterbolt to extend the duration of the amulets for an indefinite period of time as long as Rudolph's nose remains extinguished. Crystal is deeply upset about this, and things get worse when Frosty gives up his hat that vivifies him to Winterbolt, leaving him inanimate again, breaking her heart, and those of her children. However, Rudolph returns with both Frosty's hat and the box office earnings, reviving Frosty and revealing the true culprit to be Sam Spangles, who is promptly arrested. Winterbolt arrives, only to have his ice scepter shattered by Lilly, which undoes all his magic, and thus causes Crystal, Frosty, and their children to melt. Luckily, Big Ben arrives with Jack Frost, who is able to revive Crystal and the others, and keep them frozen in their snowman forms until Santa and Mrs. Claus can take them back to the North Pole, while Rudolph stays with the circus until they are out of debt.