Looking at her mugshot, I wonder if she even regrets that. She probably saw the writing on the wall for a while starting with CA"s arrest. The lady in the mugshot looks steely and resigned--even defiant (consider by contrast CA's mugshot, in which he looked equal parts terrified and nearly crying). She's not ancient but she's lived a long and full life. One possibility is that she's like, "Hey, I won. I got rid of that a$$hole who was trapping my precious daughter and grandkids in Tallahassee, spent over a decade with them, and now they're all safely ensconced in SoFla with a shitload of money." This may seem insane and pathological, but then again we're talking about a woman who orchestrated a murder to get what she wanted. Insane and pathological does not seem farfetched at all to me. And so I could totally see her saying "I got what I wanted, and if that means I now have to spend the rest of my (relatively short at this point) life in prison, so be it." Not to mention the possibility that some rich Miami lawyer may, just may be able to manufacture pity and/or RD in one of twelve jury members.
Lots of speculation, of course, but seeing how hard she looked in her mug shot compared to CA's lost-boy almost-weeping mugshot has really made me think more about their relative character. In particular, it makes me think she was the tough guy all along and his tough-guy act was just overcompensation for being a momma's boy.