Here is what she did and why charges against her were dropped.

Who cares about Stormy Daniels,  anymore?  She has lost her "bump" in popularity on the porn circuit, and has devolved back into what she was before her lawsuit against Trump:  A woman who is making money from being well known (after the lawsuit) as a nasty girl.  

She was arrested in an Ohio porn club:

Court documents reportedly claim that Daniels, during her performance, forced faces of club customers into her breasts and used her exposed breast to smack their faces. She also allegedly fondled the breast of female customers.

Charges were dropped on technical grounds:

Charges were dropped because  . . . .  
she was more of a guest of the club than a "regular" performer.   

So she continues to be as filthy as possible,  willing to do just about anything as she gets her jollies performing in front of a warehouse full of men with cameras and selling the fun times as "porn."