In most comic storylines, Jimmy Olsen isn't a guardian. He's more often involved in reporting and assisting Superman rather than having a guardian role.
I'm pretty sure it's not real. There's no concrete evidence or reliable source to confirm its authenticity. It could just be a story someone came up with for entertainment.
The Olsen twins in 'Full House' were adorable. They played Michelle Tanner. Their on - screen presence added a lot of charm to the show. They were so young and cute, and their acting was quite natural for their age.
Often, there are themes related to her stardom and the pressures of being in the public eye. Fanfics might depict how she deals with paparazzi, rumors, and the expectations of her fans. Also, her off - screen personality and her friendships in Hollywood are sometimes explored in fanfic.