@AJ-and-Erica0 - at this point you absolutely must loop Airbnb into the situation. You cannot get ahold of the guest, they have access to your property way past check out, and they have left personal belongings behind. None of this is good for you and you need assistance. First of all, follow all Airbnb directions. Shy of that, tell the guest that you are packing her belongings and putting them out of your home so that you are not legally responsible for them. Perhaps her suitcase is filled with Heroin.... you do not want that in your home should she, if she were arrested, decide to put that burden on you. Plan on having the locks changed IMMEDIATELY and contact Airbnb to discuss this with them IN ADVANCE. She has a key and is now non-responsive and you are uncomfortable. You will need to file a claim to get reimbursement and need to make sure you are following the exact steps that Airbnb lays out for you regarding this reimbursement from the Resolution Center. When you reach out to Airbnb, ask if it is possible to request a reservation change for the additional night for the failure to return the key. They may ask you to contact the police to get an eviction direction, be prepared to do this.