She appeared in "Summer Twinkle and The Temple of the Golden Sun" when Summer Twinkle attempted to steal the Seven-Sided Chest, thinking it the cause of local draughts. Despite fighting through the traps and guards, she found that the chest had in fact already been stolen, which was the cause. In an unusual fashion, the novel ended on a cliffhanger, suggesting a sequel where she would return the treasure to its rightful location.
She makes a cameo appearance in the MLP:FiM episode "Stranger than Fan Fiction". See if you can spot her!
This is a first draft of her snake design, which might be altered later.