The Sparks Kids, What Happened to Bobbi?

I'm quite behind on my YS watching. I don't have cable and I just got seasons four and five. Billy Sparks is still around. The boy is an absolute hoot! So funny.

But does anyone know what happened to his little sis Bobbi, the pint size terror who put fear in Sheldon's heart as he ran from the school bus to his front door!

I rewatched the episode with Bobbi. Her dad was incredulous that his little gal was bullying Sheldon (You realize I've taken dumps bigger than her? lol)

She seems to have disappeared off the canvas. I just watched the episode when Mary send the twins to have dinner with the Sparks family because they were discussing the Georgie/Mandy situation. I don't recall seeing her then or in other episodes.

Did the same fate befall her as Ritchie Cunningham's brother on Happy Days?

The little girl was so cute and hardly looked scary. On TBBT when Sheldon first encounters his enemy Will Wheaton, he mentions some of the other enemies on his list like Billy Sparks (who put dog poop on his bicycle handles). Of course Young Sheldon was a show not yet written. But too bad he couldn't have said that one of his enemies was his "pint sized blonde neighbor who caused him to race from the school bus" every afternoon.

"She was scary. I didn't let her size fool me. That's why I flinch from Penny sometimes."