Angry tenant Lease Expiring

[Jane S.]

Is it a red flag if tenant refuses to respond to my phone, email and text messages? Her lease expires last day of this year. I offered additional 2 months on a 12 month lease so they could enjoy holidays, since finding a new rental is a chore. I emailed the move out instructions, called to ask them to confirm they received the email. No response. Have always used email to communicate with this tenant no prob until now. I'm thinking I ought to plan to inspect the property since they are not communicating. Or should I just stop stressing. No money owed so far and 1 month left to pay. I really need them to vacate on time and dont need to explain why.