Quoting Jadiebug & GeorgiaPeach:" Thats a great idea too, i'll use that thank you! No they do not share a room.. and the only problem ... [snip!] ... is what to do when we're out of the house.. I can leave her freak out in her room at home but what do I do at a restaurant???"
Luckily, I rarely ever go anywhere with my son when my SO isn't there - and he acts like an angel around him, so I've never really had a huge issue in public.
I remember a few times as a kid, though, when we would act up, my mom would take us outside and out us in the car. We never ACTUALLY left, but man, if we thought we were leaving, we would straighten up real quick - unless it's somewhere she doesn't want to be anyway, then that wouldn't work.