Working for His Meals
Before Gregory was allowed to eat, Samantha made him spell out words that she would randomly look up in the dictionary. If he misspelled a word, she forced him to write it until she was "satisfied," and sometimes, she just wouldn't feed him at all.
Systematic Punishments
Samantha built a system for Gregory to follow. If he misspelled a word, he would have to write it out as many times as Samantha would demand. If he didn't finish spelling out his words by 8:45 AM, he wouldn't get fed breakfast. Samantha would repeat the process at noon, usually yielding whatever result that she wanted...