Good advice from the others...

I agree with Marlene, if she ends up with an empty room, so be it. I know someone who did this with their DD (a bit older) & it did work wonders. In this case though it's a safety issue more than anything.
I think in the case of attention seeking behaviour the idea is to not react to that behaviour - so that means if she is doing something dangerous, don't have a discussion about it, just make sure she can't do it. You can talk it over later when things are calmer.

I do a LOT of talking - later - when everyone has settled down a bit.
Trying to get her to understand consequences when she is upset & in the middle of those consequences doesn't always work...wait until later (or in the morning if need be) give her a hug & have a chat then.

One on one time is good because even if it doesn't make any difference to her behaviour (and it very well might) at the very least it lets her know you love her, and gives you both something nice between the two of you instead of just yuck & stress.

Maybe it's an age thing. DS2 is seven, and he's driving us all nuts atm (although in his case, I put it down to a new baby).
So, I sympathise. I think you're doing great, it's not easy, just remember - it's not forever