Big sister wanted to leave the babysitter's house "right now" to head home and spend time with mommy, but mommy needed to get little brother into his car seat. Big sister didn't want to wait.
Poor big sister -- I guess she's finally realizing that he's not leaving.
You wouldn't tell by this photo that she didn't want him. She's really in love with him and little brother is infatuated with his big sister!

