Thumbelina

Thumbelina is taken by a toad and a beetle anywhere.
Then she loss her living space but she has a lot of meeting.
She meet very kind mouse and mole, and she find a swallow which is weak
in the mole's house.
She said,

"I'll keep you warm and take care of you."

And the swallow is well again and flies away.
Thumbelina don't want to marry with a mole, so she go to another 
warmer county with the swallow which come back.
Finally, she spend happy life with a prince.

I thought because she did good things, good things for her came back.