Police officers could I have gotten this lady in trouble?

Your getting very technical answers and they are not true to real life. There is no child abuse in this situation. There is the possibility of a battery charge but there was no criminal intent to cause bodily harm on her part, just a stupid decision. There was no false imprisonment just a very short inconvenience. If somebody double parks and I can't leave, I can't claim false imprisonment. Police would not have arrested her in this situation. It was a misunderstanding and her intentions were good even though they were wrong. There is a huge difference between a misunderstanding and criminal intent. This was a "no harm-no foul" type deal and the police would have used discretion in this case and not allowed charges to be pursued. There was no theft because she had no intention to permanently deprive you of your belongings. She returned them. Your instructor is just like all Criminal Justice professors, not in touch with real life policing.