Katie should still be mad at Brooke
It's hard to watch Katie fawning over Brooke and her wedding plans, as if Brooke never broke her heart!!!
Katie should still be reeling, yelling at Brooke, "You lied to me, and made me think I was crazy! You stole my husband and destroyed my family, all in the name of "love" and for what? To leave him at the altar when another man comes back around???"
Why does Katie care if Ridge is messing around on Brooke?
A better story would be: if Katie KNEW Ridge was falling for Quinn, and maybe even helped it happen, but didn't say anything to Brooke - as payback for what Brooke did to her.