Edit: A few comments mention the power imbalance between Lewinsky as an intern and the president. This meme shouldn't be seen as me approving of Clinton's behavior but point out that an adult man having "sexual relations" with a child should have some bearing against a sitting president.
If Clinton is in the Epstein files, show the world.
You explicitly asked if she's ever complained about it and were given an article written by her contemplating her feelings on it; it was directly a resource to your very question.
She explicitly says:
There are even some people who feel my White House experiences don’t have a place in this 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
She, now, agrees that – whatever her desires at the time – that Bill Clinton both had an overwhelming amount of power over her as both her boss and nearly 3 decades her senior. And we got to see what that power difference could mean for her when the relationship went sour.