The general point is "Carla is a pleasure to be around." This is non specific.
All other points outline specific attributes that support this statement, referring to her smile and willingness to listen and ask questions.
Macduff's son is a character that even though, his age is not stated in the play, is assumed to be young. The killing of this young character and especially the way that happened shows Macbeth's kingdom cruelty. The murderers call this boy "Egg" while he tried to defend himself and defend his mother who was later killed too.