Nope, she's tons smaller than Lolly. She weighs less than Reece too. She's about the same height as Reece (10 or 11 inches). Lolly is 30 lbs and a bit taller than them. The pictures make Founder look like a giant for some reason.

They are all getting along fine. Founder will chase after Reece, Shiloh, or Lolly when their backs are turned. If they turn around to sniff her, she takes off and hides behind my legs. Pretty entertaining