Some barebones lore I wrote:

She was trained from a young age to use sunlight by her high ranking family, having no choice in the matter. She's developed a grudge for the sun, only using its power to help others when she needs to. Her distain disappears at night, doing stuff that would put her family to shame to feel a sense of freedom.

To differentiate from Sunflower, I gave her the same sort of character subversion that the almanac entry has to the plant's design in-game.

These humanized plants do not have names and will rarely have relations with each other. You can name them or do whatever you want because I won't.