On a Brooke bashin binge....?

Why the hell was Brooke so shocked and upset that Ridge proposed to Taylor? I'm not condoning being separated and proposing to another in the length of one car ride....but didn't Brooke tell Ridge she filed for divorce and gave her wedding ring to Taylor? Kinda tells me she was out of the pic. Who will be the next sucker male to hop in her bed- Thomas? Whip?