Family Law Questions? Ask a Family Lawyer Online.
I will tryto best answer your question.
The strongest claim for jurisdiction rest in the Baton Rouge Court if her order stated that the court is retaining jurisdiction. The thing that is unusual about your fact pattern is that no one objected to jurisdiction in Tangipahoa Court when motion to modify was filed. This could be a major problem and as one could argue jurisdiction was consented to inTangipahoa if it wasn't objected at the time of modification.
In regards ***** ***** appeal question, this case would be appealed next to the Court of Appeals in Louisiana, it can then be appealed to the Supreme Court of Louisiana and then finally to US Supreme Court if US Supreme Court would choose to hear it.
I hope this information is helpful and I wish you the best of luck.