But to me 'abuse of power' is "sleep with me if you want that promotion."
Abuse of position is fooling around in the workplace with a willing subordinate.
I think I may see what you are getting at. You are focusing on the possibility that Monica was not a victim. I'll get to that next.
First let's focus on the real "victims", the people of the United States. We (not actually including me) hired Bill Clinton to do a job. We supplied a workplace and authorized employees to be hired and that included unpaid interns. A reasonable expectation would be that sex in the workplace would be prohibited and would be a firing offense, especially sexual activity between a married senior executive and an unpaid intern. With the possible exception of Nevada brothels, I am not aware of any exceptions.
By failing to fire the offending parties, Bill Clinton abused the power we gave him to manage a workplace. The American people are the victims of this abuse of power.
Now on to Lewinsky. In her March 2018 interview with Vanity Fair Lewinsky said: "There are even some people who feel my White House experiences don't have a place in this movement [the #MeToo movement], as what transpired between Bill Clinton and myself was not sexual assault, although we now recognize that it constituted a gross abuse of power" ... "He was my boss. He was the most powerful man on the planet. He was 27 years my senior, with enough life experiences to know better. He was, at the time, at the pinnacle of his career, while I was in my first job out of college."
We haven't even talked about Clinton arranging to get Lewinsky another job in exchange for her cooperation or the obstruction committed by Clinton and others in hiding and lying about the affair in order to deny Paula Jones her day in court.