Thank you for your response.
Yes, they are under 22 and single. In order to paint a more complete picture, I came to Canada as a refugee and I've got a mail asking my dependents for further documents which include their PCC. The said dependent didn't get jailed but fined and I think this does fall under conviction.
I'm planning to talk to a lawyer soon about this, but this has been worrying me a lot these days and I wanted to see if anyone had some advice for me before I do that.