social cues?

do babies know about social cues from birth? because seriously, if eden hears a loud sound or something distressing like moses crying, she looks right at me with a big frown to see if it's going to be okay. if i smile, she relaxes. isn't that amazing? this girl. i love her so much. i wondered today if my mom loved me as much as i love this little girl. and i believe she did. it's comforting.