Non-verbal communication doesn't get enough credit. I used to be one of the people who thought babies couldn't communicate, or that pets couldn't, until I got older, had a baby, and started paying better attention to different ways to communicate.
Perhaps these animals wanted food, or were curious about visitors. Sometimes my cat wants food, or to be scratched or picked up, or put down, or let in, or let out.
Sometimes a child doesn't know what she wants, but she feels uncomfortable. If she looks at you, see if you can tell without asking what it is she might be thinking. I have tried things like offering food or water, singing, getting up and watering plants, or picking up toys, to see if she wants to help (or watch, in the case of pre-mobile children).
Too often, I talked. I began to see that my questions or verbal guesses weren't always the best responses.
SandraDodd.com/babies
photo by Ester Siroky