Whispering Woods Park. The name implies that there are secrets hidden within the woods of the park, perhaps old tales or strange phenomena that could be explored in a story.
You could also consider using names like Mia, Charlotte, and Amelia. These names have a certain charm and elegance that can add a touch of sophistication to the female characters in your story. For example, if your story is set in a posh society, Charlotte would be a perfect name for a refined young lady.
Some good fake country names for stories could be 'Avaloria'. It gives an impression of a magical and mysterious land. Another one is 'Zephyria', which sounds like a place full of gentle breezes and beautiful landscapes. 'Mysteria' is also great as it implies a land filled with secrets and the unknown.
Consider 'Glimmer Grove'. It sounds like a small, idyllic country full of twinkling lights and perhaps some kind of special grove that is important to the local culture. 'Frostpeak Dominion' might be a cold, mountainous country where the people have adapted to the harsh, icy climate. Their society could be based around survival in the cold and perhaps some kind of ice - related magic or resource. 'Mystic Moorlands' is also a great name. It implies a land full of fog - covered moors, with all kinds of strange and mysterious things lurking within, like ancient ruins or magical creatures.
Sunnydale Park. It gives an image of a park full of sunshine and can be a great setting for a happy story. Maybe a family picnic or a first love encounter.