If your property is going to be foreclosed on in 15 days, your only possibility of saving it with the hope of a short-sale would likely be by filing bankruptcy. You likely won't have enough time for you to apply to the Court for a default hearing, to conduct the default hearing, to get a default judgment, to negotiate with your lender, and to find a prospective short-sale purchaser, to protect your property from bankruptcy. You should promptly consult with an experienced Bankruptcy Attorney and an experienced Family Law Attorney regarding your situation.
Please note that this answer does not constitute legal advice, and should not be relied on, as each situation is fact specific, and it is not possible to evaluate a legal problem without a comprehensive consultation and review of all the facts and court pleadings filed in the case. This answer does not create an attorney-client relationship.