Hello! I would send mine but not the wife's... If she's never been in Mexico.. and attach maybe a Letter of explanation? It's been more than a month since your question, what did you do??
I'm still waiting for any update regarding my Police Certificate, I sent my package, they sent it to FGR in Nov 1st, 2019 and still no updates in my profile... Unfortunately Mexican authorities takes forever to do any bureaucratic procedure, in person it takes 10 days or less but through the Canadian Embassy it can take 30-60
business days.. that's completely ridiculous! I just hope this results in ONLY delays in my application (I don't care if it takes 6, 8, 10 months as long as they approve my application), and not in a rejection cause they still don't receive my Police Certificate
Good luck paisano, and I hope your process goes smoothly.