You do need to go back through security if you have checked bags. I consider two hours the minimum to do that but she actually has almost 3 hours between flights which should be fine. I would suggest she send one person to retrieve and recheck the bags while the other remains inside security with the 6 year old.
G
If you InterCaribbean flight is on the same ticket as your flight from the US, will they transfer your bags? I always that bags on codeshare flights were checked all the way to EIS.
