She was recovering in a hospital in the southern city of Seville.
An emergency services spokeswoman said the woman "had no notion" of flying and air traffic controllers talked her through the procedure for some 90 minutes before she attempted the emergency landing yesterday.
In released recordings of their conversation, the controller can be heard reassuring the woman, "You're going to continue and you're going to land without any problem, OK?"
She said the woman barely knew how to read a compass and had the added complication that she was flying above the clouds when her husband lost consciousness.
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The controller asked her for the plane's altitude - some 3,000 metres - and told her what to look for on the plane's compass.
The recordings published by the Diario de Sevilla newspaper were confirmed by USCA.
When the woman saw her husband had lost consciousness she rang a pilot friend who in turn alerted air traffic control, emergency services said.
The woman's husband died but it was not clear if that happened before or after the crash in an orange grove, three kilometers short of the runway at Seville's airport.
A hospital spokesman said today the woman suffered multiple injuries but her life was not in danger.
The officials spoke on condition of anonymity in keeping with their job regulations.