The Real Little Mermaid

Almost everyone that was a child during the 90's has seen the classic Disney version of "The Little Mermaid." The Disney version is about a little red headed mermaid who wants to be human. The flowery, sugar coated Disney version was an innocent remake of the original vulgar version, created by the Grimm Brothers.
In the original version, the Grimm Brothers do a remarkable job at describing the sheer pain of the mermaid tail being riped apart to become two legs. They also reveal a gothic love. In this version the sea witch turns the princess into a human, with conditions.
The princess must, submit her ability to speak, lose her tail, marry the strange prince,  and never return to the ocean. If she tries to return to the ocean she will evaporate into the foam that washes up on shore.
When the changed mermaid goes to land she is placed into the prince's "friend- zone." It isn't long before the prince falls in love with a different lady and the sea princess is faced with a difficult choice.
Will she kill the Prince before the sun rises, or herself?
This tragic story is a strange way to explain the extremes of what love can do to a person.
It honestly seems a little ridiculous to me, I enjoy the dark story but feel as though it is lacking in verisimilitude.
What I find interesting about the story is that she is not a happy-go-lucky little girl who wants to dance around on land; she is really just a fish that can't manage to make herself happy. Love can send a person into a slump if that person does not know how to really make themselves happy. A girl does not need a man to make her life complete; everyone needs to be able to search for the positive things in their lives or they won't ever be fully satisfied. 
Sometimes, when I get upset, I think about all of the bad things in life and become depressed. This often leads to hurting myself. If I could step back and accept the bad and recognize the positive things, I wouldn't get so depressed. The story may have ended differently if she were able to step back and just be happy about what she does have.
It's not an easy thing to do, but it could extend a life.