Who is Alia Sayidovna from The Case of Comrade Tulayev and what is their importance?

Alia is Makeyev's wife. She is a Tatar. Alia is a pretty, short, plump woman with sleek animal grace. She is clean and has bluish-black hair that is twined over her temples and doe eyes. Alia seems to be made up of soft curves that melt into each other. She has ancient Iranian gold coins hanging from her ears and fingernails that are painted pomegranate red. Her statement of a conversation with her husband helps to seal his fate.