In fact, the whole song is like a heroine telling her lover to stop expecting her and leave her. She is hopeless.
The title of the song "Humpty-dumpty" means that the heroine of the song is as fragile as an egg and as clumsy as a dumpy. "After setbacks, she will never recover.".
. . . You have been very patient.
You have been patient enough, which means you are better than me. You showed patience, but that's enough.
The sentence with a girl is sung by a girl, and the girl refers to herself, just like the' little girl I' in China.
In fact, the whole song is like a heroine telling her lover to stop expecting her and leave her. She is hopeless.