Needs extra space to get the wheelchair out of the side door? Or UP TO the side door, to help their handicapped mom from the passenger seat into the chair? Maybe they turned from that first driveway, closest to them, and their turning radius sucks?
Really not a big deal if they're a little into the striped zone, the only other space next to him is also a handicapper, with plenty of room, too. He's not into the other parking space. They'll probably be done and on their way soon enough, don't worry about it. They have to deal with their handicap all their life, cut 'em a little slack on their parking.