What does Night Jar make her daughter for her tenth birthday in the novel, The Underneath?

Night Song makes a large jar for her daughter as a tenth birthday gift. The jar is decorated with an etching of Grandmother, but not a hummingbird as the other jars she had made. After Night Hawk realizes that Grandmother has tricked Night Song into going back to her animal form, he traps her in this jar and buries her and the jar on the bed of the Little Sorrowful Creek.