Puerto Rico title search?

[Paul Pence]

Can someone point me in the right direction to do a title search in Puerto Rico? My wife was blindsided the other day when a distant relative of her contacted her to tell her that her grandfathers house in PR had been vacant for the last three years and wanted to know what she was going to do with the house? My wife had always assumed that after the passing of her grandfather that her grandmother had sold the house when she moved in with relatives in New York. Her grandmother has recently  passed.   Her goal is to find out if she does indeed own the property so she can determine the next step.