I’m a parent, just FYI. And while I have not been divorced myself, I watched my mom go through three fairly messy divorces, and have been involved in my fair share of court proceedings as a result of this.
Giving a child Tylenol PM (which, as has been previously pointed out, and as you ignored in your previous post, also contains Benadryl, in addition to the Tylenol) daily for over a year is a lot different than “just giving a kid Tylenol” and I suspect that you are wrong about how the courts would perceive this. I know for a fact that you don’t know for certain what the court outcome would be. You are angry and bitter (with some good reason, I know) and are assuming that the outcome would not be in your favor. But you don’t know for sure.
From the OP:
These things should never have been brought up to her in the first place. She does not need to know the gory specifics of why you and her mother divorced. She does not need to hear your disapproval of her mother’s current living/boyfriend situation. She does not need to hear your list of all the wrongs her mother has done you. I know that it can be impossibly frustrating to be in a situation like the one you described where your daughter bursts into tears when watching Mary Poppins because she misses her mom, because you’re sitting there thinking, “OMG, that woman is so far from Mary Poppins.” But no matter how tempting, you have to shut your mouth and refrain from trashing your ex, in that situation or any other. In front of your kids, your ex is their mother and is deserving of respect. FULL STOP. Anything else is going to be damaging. Example from my own life: When I was in junior high, I made some comment to my dad about how obviously you’d want to date a guy who finished college, rather than a dropout. His response was, “Well, that’s not what your Mom thinks, apparently” - a reference to the fact that my stepdad was a HS dropout whereas my dad was not. I didn’t need that. Mom’s love life and/or choice in boyfriend/husband was not my fault, not my responsibility, and the only effect my dad’s little comment had on me was to make me feel like he was a bitter and angry person. Which, in fact, he was. We currently have a barely-civil relationship and talk a couple of times a year.