At this age, she should be trying to sit without support, albeit unsteadily. She is likely to be rolling, first from front to back and slightly later, from back to front. You should be able to demonstrate the downward parachute reflex with her; holding her on her sides, when you bring her down suddenly, she will raise her hands as if to clutch at something. She can now hold onto slender objects and shake rattles. She has a tendency to mouth objects she gets her hands on. She plays with her feet and holds her bottle when being fed. She produces unintelligible babble, says vowels and syllables and turns when her name is called. She is not shy!