Lady,
I feel sorry for you; but cut your loses and go home. I you hire someone there are few that can not be bought and worse they would continue to play you for money. In the event that you find assets the courts are a joke and a few dollars to a judge would mean that you get nothing. And finally worse if you become a problem you may be harmed. There is no law here.
Most Dominican steal quickly this person planned a long time which makes him dangerous. Go home and thank God it was not worse.
Bearcat
Nah, that isn't quite correct. Sure it can happen but it's pretty unlikely.
Searching for assets requires a PI or intimate knowledge of the country, no doubt. But you don't tell the PI any more than they need to know. Just find the assets. Then you decide what to do about it.
That said, I will concur that fighting things in court here is largely a way to enrich the Dominican legal system. The laws remain old and rusty and things such as "damages" are almost unheard of.
Likely all the original poster can do it register her name as an owner (after providing proof, of course) which will prevent any of it from being sold. But just because you own it does not mean you can use it...that's another set of laws.