Who is Valia (Valentina Anisimovna) from The Case of Comrade Tulayev and what is their importance?

Valia is Erchov's wife. She devotes hours to caring for her body, spending most of the day lounging almost naked in gauzy materials. Erchov meets Valia when she is a provincial woman from Yeniseisk. She has an innocent and self-assured animality that Erchov is attracted to immediately. Valia was the young wife of a battalion leader when Erchov met her, and he immediately talks her into divorcing her husband and marrying him. She has prominent nostrils that seem to be always scenting something and big, feline eyes. Valia also has golden curly hair, full lips, prominent cheekbones, and a clear, pink complexion. When Erchov is arrested, Valia writes a letter to the Committee asking for a divorce and claiming she had no idea she was married to a traitor.