i totally understand dealing with a child who does not want to go to sleep alone in the middle of the night. Been there, done that. I have 3 kids. You can't appease them just to shut them up. However, we have a neighbor whose child likes to yell at her parents (she's about 3) at 1am, 2am, 3am & 4am. Pretty much on the hour.
Thier daughter's window faces our bedroom windows. At this point of the year, it is VERY hot where we live. We cannot install air conditioning due to association rules. Would it be awful to ask them to close thier child's window in the middle of the night while she is freaking out? She is VERY loud. It's hard enough with 90 degree temps to sleep. BTW, the other night, around 2am, the babe was asleep,but I heard the dad blabbering on for about 30 minutes. I think they may just have loud voices.