Scout ~ I agree with DnJ's advice to document everything that happens. I am so glad I documented things in my situation.
I don't recall the details of where you are in the process, or how the law works where you live, but I hope your L has good advice for how to proceed. When I pushed things forward so that we had a legally enforceable temporary parenting plan (even without the timeshare I preferred), a lot of the nonsense stopped.
Being one minute late is one thing but from a legal perspective is inconsequential. Keeping S2 overnight and making up a story about it is a serious breach of trust, and would have serious legal consequences if it violated your parenting agreement. Document everything that happens, but especially highlight the egregious things. The first item is an example of discourtesy, the second an example of extremely poor co-parenting and untrustworthiness.
High-conflict D is awful. Hang in there, focus on what's important, and don't get baited into following cheeseless tunnels.
