When Cortez was at work and not in an undercover role, she dressed in a professional manner- slacks, nice top,suitable coverage, and a jacket. Undercover or on a date, she dressed appropriately for the occasion.
This lieutenant, as you say, older than Cortez, seemed highly intelligent, professional, capable, all business, almost as if she could walk on water. But then is shown with the men she COMMANDS, in the command center in a low cut top. Others may see it as appropriate attire for that scene- I don’t.