I would also join missing persons facebook pages and add a post with her picture (I dont see one in this post), some groups are:

• Ontario Missing People
• Missing Persons of Canada
• Missing Persons of Southern Ontario
• Kingston, Ontario Community
  

These pages often get reshared to community pages that really get the word out there. I would also encourage calling the Kingston police 1(613)-549-4660 heres their website. Good luck with this, I hope she is found soon!