Forced perspective/depth of field. She's behind Biden just beyond where this photo was cropped. Long camera lenses with their focus wide open will create this effect. When we see her in other shots it looks like she's almost inches behind Biden when in actuality from this shot she's easily 15-20 feet away.

i believe she sat a few rows back in this version. so shes out of frame here but would sit like 5 rows behind hunter or somewhere in that area