What does the following quote from Mansfield's "The Garden Party" tell about Laura?
"Little faint winds were playing chase, in at the tops of the windows, out at the doors. And there were two tiny spots of sun, one on the inkpot, one on a silver photograph frame, playing too. Darling little spots. Especially the one on the inkpot lid. It was quite warm. A warm little silver star. She could have kissed it."
The passage you have quoted reveals Laura to be sweet, happy, light-hearted--perhaps a little frivolous--well-intentioned and in possession of a general good will. Laura speaks of the wind by employing a pathetic fallacy. A pathetic fallacy is a form of personification that gives human traits to nature, animals, and inanimate objects. It differs from personification in that personification also applies to abstract ideas, like love and valor. She says the "winds were playing chase" and going in and out of the open windows. Only someone very happy and simple of heart would imagine the winds as being at play. She extends her fallacy to include the spots of sunlight, seeing them as playing so prettily that the "warm little star" of a sunspot deserved a kiss:
Darling little spots. Especially the one on the inkpot lid. It was quite warm. A warm little silver star. She could have kissed it.
Two things confirm this understanding of Laura. The first is the vocabulary the narrator employs while describing Laura's thoughts. The narrator uses words like darling, little, and tiny. The second is the preceding context of the quotation you've selected. Prior to noticing the playing winds and sunspots, Laura found things friendly and daringly took big bites of her bread and butter:
The friendliness of it, the - the - Just to prove how happy she was, ... Laura took a big bite of her bread-and-butter ....
Further, she "skimmed, over the lawn," gasped, "I do love parties," heard the kitchen door "chuckling," and hugged her brother. We also learn in the context of the quotation that she hasn't noticed the world around her before today:
But the air! If you stopped to notice, was the air always like this?