Earlier quoted context omitted.
Actually, Monica only realized what the stain on the dress was several months after and it was her friend Linda Tripp who encouraged her to keep the dress: https://metro.co.uk/2018/11/13/monica-lewinsky-shares-x-rate...
That may be the reality, but I don't believe that was the narrative then, or common knowledge now. Certainly I wasn't aware of that, although I'm also not too particularly invested in it so don't follow things that closely.
I got the direct impression from the news that Monica Lewinsky was this pretty young thing, very innocent, who had a tryst with the POTUS and was freaking out. Linda Tripp came along and under a false veneer of sophistication and helpfulness, instructed Monica on what to do, move-by-move.
The story was of an ingenue who was, in turn, under the thrall of the POTUS and then Linda Tripp.