Not that I’m the Frankie whisperer, but I think there’s potential a lot of people might be assuming FS cares about losing Star because they’re warm, kind empathetic people themselves. She showed very little love towards Star beyond dressing her nicely for the vast majority of her life, was actively cruel towards her, only has mild depression according to a highly experienced forensic psychologist, and then didn’t appear emotional at the hospital yet was emotional at the verdict.
I get some people freeze in intense situations (I’m one of them), but it’s weird how she reacted differently in the two situations. Nurses must be used to the type of people who freeze and aren’t outwardly emotional in the moment, yet they still thought she behaved weirdly.