The 47-year-old, originally from Clydebank was murdered at her home in Mauritius.
Tributes were paid at a service for her which took place at the St Augustin Church in Petite Rivière Noire.
Her parents were unable to attend her funeral due to ill health.
Doreen and Alexander Kerrigan, from Erskine in Renfrewshire, said the death of their daughter had left a “huge void” in their lives.
In a letter they stated that their daughter wished to be cremated.
“We and Janice spoke several times about the fact that we wished to be cremated on our deaths and she always stated that she wished to be cremated also,” they wrote.
“Never ever did we think that she would precede us.
“We hope and pray that her wish to be cremated is carried out with the dignity and respect which she deserves and that, the urn containing her ashes is given to her beloved son Gavin, our grandson, which we know is what she would have wanted.”
Friends and former colleagues of Janice also paid tribute to her at the service saying
“She was always keen to help and nurture those who crossed her path.
“She had a lot of empathy and the word difficult was never in her vocabulary.
“Janice has left a legacy in this country and it will be hard to follow in her footsteps.
“I’m so proud that Janice forms part in our life and she will never be forgotten”.
Three men have appeared in court in connection with the 47-year-old’s murder.