Mairead Philpott's appeal at Nottingham Crown Court is the first to be televised outside of London.
The law was changed to allow cameras into the Court of Appeal last month, and today's case is set to be the most high-profile to be broadcast so far.
Philpott is appealing a jail term of 17 years for the manslaughter of her children in a house fire in Derby last year.
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The man was found last night with serious injuries to his head and torso.
Firefighters were on the scene within minutes after the collision involving three vehicles.
Her daughter has suffered from Huntington's disease for more than 20 years and is showing no awareness.