Apparently, there is a professional & scientific explanation for the crying whenever mummy leaves the room. It’s called Separation Anxiety!
Baby feels like they miss you immediately when you leave the room, and gets upset and starts crying. This usually happens during the 6 – 7 months when they are beginning to be aware of the people and surrounding about them. They also start to develop emotional attachments to the people around them.
Another thing I noticed Eva doing more recently is calling out both mummy and daddy but not really looking at anyone in particular. Not too sure if she is really referring to someone, or she is just trying to articulate a sound.