Example, someone I knew many years ago, when I was still in college, was with someone who called her constantly. He would call or text her at least a dozen times a day asking where she was and what she was doing.
Another individual I knew was married to someone so controlling that she had to lie to her husband if she visited with her mother or sister on the way to or from school because her spouse controlled her daily activities.
Yet another friend of mine would be yelled at if her house was not spotless when her spouse came home from work.
Regardless the individual situation, none of these people realized they were being controlled or abused. They weren't physically hit or physically mistreated, yet each of them had physical ailments because of their abuse like stomach problems, headaches, muscle aches, palpitations, back aches, etc. Never, ever did they seek help for their domestic problems. They attributed the discord to tension, situational problems at the time, health issues, familial problems, work related problems and such.
I do not know what happened to these women or the many like them that I have known through the years, but I would bet they are sickly both physically and emotionally and they have absolutely no clue why and remain ignorant of the years they have spent under an abuser's clutch.