Re: Ex-Wife Owes Me Money
First step might be to file a contempt motion with the family courts as she is in violation of the decree.
Yes, you can sue in small claims court for what's owed you. If you prevail, you will be awarded judgement but the courts will not collect the money for you. You can file writs to garnish her wages/bank accounts (if your state allows), place liens on her property (again, if the state allows) and to also seize her tax returns.
File a contempt motion with the family court and see if mediation can resolve the matter; inexpensive compared to small claims and writs.