Lice are horrendous so I would treat her as soon as possible just to be safe because the work involved once it becomes a full blown lice issue is a nightmare. All the washing of clothes, toys, bedding, the constant shampooing and combing.....ahhhhh! I never want to go through it again.

I would treat her with the shampoo and use the little nit comb for a few days every night just to make sure there are no eggs. You don't want anything that was there to hatch anything.

Chances are she probably didn't catch anything but better to be safe than sorry and have it spread through your house.