I would park by JTS, the walk from the Hilton lots over to the stadium is going to be very difficult for a handicapped person and back. Lots of people tailgate in the handicapped lots and it easy to get in and out of that area after the ballgame if you get there early and park in S1. If you can go west of the stadium on Beach and come in that way, there will be attendance at the top by Reiman Garden and just turn in there and tell them you are going to the handicapped lot and they will mark on your windshield and shoot you down to park.
They do allow a little handicapped parking in S2, but its limited before they push your around to S4 and S5. Remember if she has a handicapped plate or sticker, they have to provide parking for you, its federal law, they cannot shoot you out to GA parking and if they try to do that, raise hell with them.
I have been around the block more than once with ticket takers that would not allow us to park in the handicapped lot when we had our daughter with us. One time they said I did not have a sticker, and I just told them, "I have the handicapped license plate and my daughter is right behind me in her wheel chair." A supervisor came over, he saw what was going on and flagged us through.