This is a metaphor in which the qualities of a human being are transferred to something that is not a human being
Once upon a time there was a Little House way out in the country. She was a pretty Little House and she was strong and well built.
Here, the little house is given the human qualities of being pretty and female. This may be to associate her with kindness, sweetness, nurturin - qualities often attributed to women.
Some may understand personification as giving human qualities to inanimate objects. Others may include the attribution of human qualities to animals.
Anthropomorphism: 1. Giving human form to God 2. Attributing human form or personality to something impersonal or irrational.*
*Definitions adapted from the Oxford English Dictionary