Rhian Jones' ex-husband Michael had a serious stroke in her house in 2010, and the ambulance took two hours to arrive.
She told our Health Reporter Rob Osborne it was simply "frightening" waiting for paramedics to arrive, and her confidence in the emergency care system has been shaken as a result.
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It's hoped more people will consider using their local service amid concerns over the future of the bus industry.
Dry across the country this evening with broken cloud and some late sunshine. Scattered showers expected tomorrow.
40,000 people are expected at the motorbike event in the capital this weekend.