Mother Was Arrested For Placing Cameras In Her Backyard. Was She Unlawfully Arrested And Booked?

Location: Missouri

My mom has been battling a property line dispute with her neighbors at a new house she’s moving into. They have been parking and placing their dumpster on a corner piece of the property. She finally won the case in court but they continued to let their dogs come over to her yard and poop, and etc.

So my mom placed cameras all around her house (something she has done for all her properties and her previous house). So this is nothing new to her and she was going to do this regardless. But the lawyer that was helping said to get footage of their dogs and them crossing the property line just to help in a further case battle.

So anyways she does this, and the neighbors call the sheriff office (neighbor personally knows one of the sheriffs possibly a family member). The cop proceeded to tell my mom she couldn’t place cameras that faced their property. However it’s in public view and wasn’t faced anywhere near a bathroom window or bedroom. The front of their house literally faces the right side of the my mom’s house. So any cameras just look at their front of house. Like a ring camera would. Mind you all the other neighbors also have cameras around their houses and property. My mom argued and didn’t believe the officer so he arrested her without very much explanation and brought her to the office. Then released her with no charges or without really saying anything. She was never booked. It seemed like he arrested her and brought her to the office as an intimidation tactic. He never charged her with anything. He literally said my mom couldn’t have cameras on her property and she refused so he arrested her. Then just let her go at the sheriffs office. No charges, no bail or anything. Did he really just unlawfully arrest my mother?

Thank you