Scott Hastings, the younger brother of former Scotland rugby captain Gavin, won 65 caps as a centre for Scotland from 1986 to 1997.
Jenny Hastings, 60, had previously spoken openly about her struggles with mental health.
She disappeared from the couple’s Edinburgh home for 36 hours in March 2017 and walked for miles to the Pentland Hills while she was suffering from depression.
She eventually got help by going into a police station and praised the officers for the support they gave her.
The couple later spearheaded a charity campaign to keep people active and improve their mental wellbeing.
The 100 Streets challenge encouraged people to get out for exercise with friends.