Thagu,

Here's what u can do. Ask the airline for a Wheel Chair - after u ask for a wheel chair service, it will be entirely the airline's responsibility to take you mom to her destination, i.e. NY's JFK. Starting from TIA to JFK and all the transits on the way, airline will provide her an associate with wheel chair who will receive her in the aircraft, take her to transit areas/lounges and hand her to someone (meaning the associate will not leave her by herself alone in whichever country the transits might be), be back to take her to her next flight, have all security & clearane checked/cleared for her and so on. So, be sure to ask for a wheer chair service directly with the airline - do that fast!

I dont suggest on finding out the airline terminal/gates in transit airports and all thats mentioned above as this will only confuse her! Also, do NOT give her airport maps, as authorities in the transit airports might think otherwise. Wheer chair service is the easiest, fastest, and the most secured way to go.

Good Luck!