I'm not sure specifically which 'la gata full story' you're referring to. It could be a story about a cat (gata means cat in Spanish). Maybe it's a local folktale or a personal narrative someone has created.
In terms of the plot, it could start with Sombra's return or some sort of threat that he poses. Luna then steps in to deal with it. The setting within the My Little Pony world would be important. It could be set in Canterlot or some other location. The fanfic might also introduce new characters or use existing ones to support the main plotline between Luna and Sombra.
Obviously, the princess would be one of the main characters. There might also be a charming prince or a dashing knight as the male lead. And there could be a scheming villain, perhaps an envious noble or a power - hungry courtier.
One interesting aspect could be its setting. It might be set in a grand, fictional kingdom which adds a touch of magic and allure. The characters in 'la princesa' are likely to be complex and well - developed, with the princess herself having a unique personality.
One common theme could be the battle between light and dark. Luna represents the moon and has an association with the night, which can be seen as a time of mystery and sometimes danger. King Sombra is a dark character. So the fanfic may explore this contrast in terms of their powers and personalities.
As I'm not aware of the 'la gata telenovela' details, we can only guess. It's likely that the main character is the 'gata'. She could be a young, independent woman. There might be a male lead who is her love interest. And there could be other supporting characters such as an older mentor - like figure who guides her through difficult times, and a group of friends who are part of her social circle and influence her decisions throughout the story.
I haven't watched 'la gata telenovela' so I can't provide the exact full story. But in a typical telenovela story, there are often complex relationships. For example, the story might begin with the 'gata' character living in a small town. She has big dreams but is held back by her circumstances. Then she might meet a rich and charming man who she initially clashes with but later falls in love. Meanwhile, there could be a jealous rival who tries to sabotage their relationship. Throughout the story, there would be various sub - plots involving family members, friends, and the community which all contribute to the overall drama of the telenovela.