Hadn't Crystal Carson made the decision to bow out of acting by then? As much as I'd have loved to have seen the issues unfold and eventually come to a head between the two sisters (as opposed to her simply visiting my girl and returning for her funeral), I can't see how that would've worked if she hadn't wanted to reprise that role long-term. I'm just glad that they'd gotten closure before Brenda's "death", period.
I believe she gave up acting later. From what I recall, she was actually going to come back long term in 97/98, but it was scrapped to get money for KMc's return. I think she was open to returning in the 90's.