This poem look into the way our heart endures toughness, if we are hiding something from somebody.
And, it was so with a man and her daughter. The deal is, he has been lying to the daughter, by telling her, another woman was her mother.
The daughter finds out, and demands to hear the truth from the father, he was unable to hide it on that day, the truth revealed, yet, it wasn't his fault that he and her mother were not together.
Her family didn't want her to marry him, so, forcefully, they took her away, leaving the baby with the father.
So, the girl grow up with her Dad, and another woman.
Therefore, on that day she finds out the truth, she was happy, and on the other side, she was sad, because, her mother family make her not to feel the love of her mother and father at one place.
She does travel and meet her, giving the mother, the privilege to carry her, because she didn't do it much, when she was young.