Bernadette Connolly's daughter said she is "praying every day" for someone to come forward with new information about her mother's whereabouts.
Jade Connolly also shared a new pic of her mam, and said she had dental implants on her top jaw which would be recognisable.
Friday will mark three weeks since the 45-year-old disappeared.
Bernadette got a taxi from Swords to Donabate that morning and was picked up on CCTV on the Shoreline Hotel's cameras.
She was then spotted on Donabate beach at 12:38pm, her last known location.
According to Bernadette's daughter Jade, the taxi driver said that Bernadette was meeting a friend. She also said that Bernadette had a pink towel with her.
Jade has continued to campaign online to try find her mam.
She said on Instagram yesterday: "What I’d give to see your face again Mam. I’m praying everyday someone will come forward remembering something."
She also her followers information on her mother's teeth today.
She said: "Just to put it out there, my mam has perfect teeth. She has dental implants on her top jaw, so you can imagine what to look for."
Bernadette is described as being 5’ 6” in height, of slim build, with hazel eyes and long black hair. She is thought to be wearing a black woolly hat with black bobble, black handbag, black trainers with white soles, black leggings and a black puffer jacket.
Gardai have appealed to any road users who may have camera footage (including dash-cam) who were in the Donabate area on Friday, 7th January, 2022, between 11:30am and 12pm to make this footage available to them.
Anyone with any information on Bernadette Connolly can contact Swords Garda Station 01 666 4700, the Garda Confidential Line on 1800 666 111 or any Garda station.
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