If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Baby Nikki is about to have her first haircut! Because she's not familiar with the hairdresser environment she might be a little hard to look after, though. She probably won't let you move on unless you follow her requests. So you need to realize her wishes immediately. Even if you need to wash her hair, just leave it and focus on how to stop her tears!