Sorry I am late, had company for supper tonight.
I agree with everyone who said it was odd/inappropriate for Seymore to be with the little girl, alone. But that may be me projecting feelings into the situation. It did stick out to me though. But other than the kiss on the foot, it did seem to be a sweet, innocent relationship. The girl looked up to him and he had become her playmate, somehow.
The ending, while I kind of expected it, still took me by surprise. I thought maybe the friendship with the little girl was going to snap him out of it, his depression or whatever he had going on.
This was the first thing by Salinger I have ever read.