
Alumiyum, I stand behind my comments. Parents need to figure out whatever they need to figure out for their children and whatever works for their kids. Parenting is difficult but it isn't impossible. It is your cousin's job to figure out her child. If that means they won't go out in public because nothing works for the annoying child then that's completely on them and, depending on who you ask (including some child experts), that reflects more on the parents than the child. If the child has special needs then the needs must be learned to the best of their ability. If the child is The Omen then...I dunno.
This isn't a "how to" thread for parenting.

Everything that I have said can be applied however parents see fit. If parents want to stay at home, get take-out, or leave everytime their child acts up (often because they didn't fix the problem the first two times their child acted up in public...not every badass child has "special needs") then that's fine
for them. I hope the parents don't end up miserable or their child never feels that he or she is in charge of their household. If that happens, they shouldn't really wonder why.