Final answer:
The Corinthian women come to Medea's house to console her, empathizing with her situation. This differs from the other referenced activities, such as the delivery of messages, seeking revenge, or celebrating a festival.
Step-by-step explanation:
The Corinthian women show up at Medea's house to console Medea. This is a moment where Medea, despite her criminal actions, is still seen as a rational being who attracts sympathy and support from the women of Corinth. This support is partly due to the shared understanding of her plight as a woman and her suffering after her husband's betrayal.
Medea's plan to send a poisoned cloak to the princess, who is marrying her ex-husband, is a key aspect of her character - displaying both her cunning and her capacity for cruel revenge. However, the Corinthians' initial reaction is not driven by a desire for revenge but rather an attempt to provide consolation.
The mention of a festival, such as the reference to Demeter's festival in another part of the given texts, highlights how Greek plays often interwove cultural and religious practices into their narratives. Nonetheless, it is the emotional support during Medea's tumultuous experience that brings the women to her doorstep, rather than celebratory or ritualistic reasons.