In the initial months, your baby does not have the senses to respond back to your conversations. However, after 3 months, she starts feeling comfortable in your arms and her responses are more spontaneous rather than reflexive. A smile from your little one at this time is an indication of an internal comfort. Slowly, as her senses develop, she will learn to express her likes and dislikes, by making different sounds.
What you need to know As a parent, it is very important to take cues from the sighs and coos of your child. It could mean that she is happy about something, while at the same time, it could mean that she is uncomfortable.