Originally Posted by
tom911
It sounds like you're requesting the equivalent of the service AA provides for unaccompanied minors at $100 each way. You actually expect someone from AA to show up at her hotel to offer assistance? If she was an unaccompanied minor an AA employee would be with her at all times, but AA doesn't offer this service for adults.
AA does offer a comparable assistance for adults. Rather than being one charge for the itinerary, it is a charge for each instance of meeting the incoming flight at the connecting airport and taking the passenger to the outbound flight, staying with them until they are boarded. The passenger needing this service is preboarded. The attendant will not necessarily speak another language, though, so if Abuela wants to get something to eat it could be a problem.
AA has also been very good (IMO) with allowing a non-flying companion to accompany a passenger needing assistance to the gate at the point of origination.
I agree with those who said that it was overly optomistic of OP to book Abuela on a complex itinerary when she does not speak English. She wasn't "somehow...flying BOS-LGA JFK-EZE-MVD", somebody (Abuela or a family member)
booked her on that itinerary. AA has six nonstops daily from BOS-MIA. Why book a connection? Relative takes Abuela to the gate at BOS, stays until the plane departs for MIA. In MIA, I would have paid for an attendant to meet Abuela and make sure she got on the flight to MVD, but if OP didn't want to do that, you can find someone who speaks Spanish pretty easily in MIA. Once in MVD, presumably OK with wheelchair assistance to get from the gate through immigration and customs.