Motor neurone disease (MND) left Sarah without a voice and the use of her hands at the age of 34.
It was within months of her becoming a mum for the second time.
As they were growing up, her children Aviva and Eric only ever heard her speak through a machine with an emotionless robotic voice.
But 25 years on, artificial intelligence (AI) has recreated their mum’s real voice from just eight seconds of audio on a scratchy VHS tape.
Sarah spoke to the BBC with eye-gaze technology – which uses a camera to track her eyes as she looks at letters on a screen in front of her.
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