If she had the proper words to say,

Poor kid, and poor family! A.J. is a sweet kid to be so concerned, and so open to understanding why his friend lashed out at him when he was scared. I hope the family can find a diagnosis and get him some help quickly. Like others have suggested, contacting whatever support group applies is a great first step. They'll get moral support right away, but also, many groups have funds available for supplies like wheelchairs, or home improvements, like adding ramps or widening doors.

I think band aid shaped cookies would be totally cute for a fund raiser for him :)