What are my chances to refinance if my home to value has droped amost to even money?

Wife and I purchased the home a year ago for 475,000 and currently owe 423,000. I hate to say but because of a devorce we have to do something about the house. Is there any way to refinance the house to get a lower payment so the wife can handle the payments on her own? House prices have droped so much in our area that I'm not even sure if we owe more than what the house would now appraise for. Thanks for your help.