Nicola Bulley's parents told their daughter "we pray every day for you" as they left a message on a bridge near where she vanished.
Mum-of-two Nicola, 45, went missing in the village of St Michael's on Wyre, Lancashire, on January 27. She had dropped her children off at school and logged into a Teams call while walking her springer spaniel, Willow.
A "bridge of hope" was set up by friends and family over the weekend. It has been inundated with notes from local people and schoolchildren.