JS, when the word gets out that Carrie is back, they'll probably be a a small crowd of distraught cat owners demanding that Carrie either find their lost cats or begin legal action against people who found them, but won't give them back. (Imagine cranky Judge Goldberg's reaction when a pile of cat ownership cases turn up on his docket.)
As for representing Anna, with Carrie as her attorney, she'd go from Tony's grieving widow to number one suspect in a Salem second. And if Anna does joins Hattie and Sheila in prison, will she be allowed to take Tony with her? If not, whom can be trusted with the sacred task of safeguarding Tony's ashes? (Would Roman give the urn a place of honor over the Pub bar?)
Finally, Rafe better not consider that Brady sister two-fer. Imagine poor Rafe trapped in a Salem Inn room when Carrie and Sami start blasting each other with insults. The noise would be so loud that Hope would show up in her official capacity to investigate. (Yes, in Salem, the police commissioner investigates noise complaints.)