"I wish I could manage to be glad," the Queen said, expressing her longing for happiness. She struggled to remember the rule for feeling glad, indicating she wanted to experience joy but found it difficult to do so. The Queen's comment reflects her desire for contentment and the challenge she faces in achieving it.
"You must be very happy, living in this wood, and being glad whenever you like," suggests an expectation that happiness is easily accessible in her surroundings. The quote highlights a contrast between the ideal of effortless joy and the Queen's personal difficulty in feeling genuinely glad, emphasizing themes of happiness and emotional regulation in the story.