And if there is one constant in her character development over the first 3 seasons, it's that she's shedding that Vulcan demeanor (which she kept an nurtured in her 7 years aboard the U.S.S. Shenzhou and regaining her 'humanity'.
Also, she was advertised and has been the lead/main character from day one of the series conception. It amazes me tpo this day that some people are still -- "Yeah, WHY is to show SO focused on Michael Burman?...


^^^
Yeah, why? SHE'S THE SHIOW'S LEAD/Main CHARACTER AND ALWAYS HAS BEEN.