In Pawn by Ellis Parker Butler

To his very considerable surprise, Lem did not find residing with the Shuders a painful experience. Rosa, for all her strange ways of doing things and her incomprehensible objection to chickens killed in any but a certain way, was a better cook than Saint Harvey, and knew how to prepare things that a boy's appetite found delicious. Lem had to sleep in the lean-to, on an old iron cot set among the piles of junk, but it was summer and hot and he enjoyed that.

Shuder made him work, but it was work that Lem liked; the kind he had always done for his father, and he had only about half as much of it to do as his father had made him do. He enjoyed helping with the horse, harnessing and unharnessing it. There was only one thing Lem refused to do -- he would not go out of the junkyard. For a week he kept under close cover. Then, one night, he stole away, and, keeping in the alley shadows, made his way to Miss Susan's back gate. He did not risk the rusty hinges creaking, but climbed the fence, and dodged to the shadow of the house.