Mr Justice MacKay adjourned Smedley's sentencing to a date yet to be fixed for the preparation of a pre-sentence report, and remanded her into custody.
He told her: "I want you to understand that you stand in very real peril of a prison sentence as a result of this conviction. Don't have any delusions about it."
More top news
Brent Stirton won the Wildlife Photographer of Year award for his image Memorial to a Species, taken at a game reserve in South Africa.
Analysis of queues found drivers faced 1.35 million traffic jams, costing them in wasted time, fuel and unnecessary carbon emissions.
It will be a cloudy day across much of Wales, central and southern England with outbreaks of rain and drizzle.