I just finished watching the documentary Tiger King: Murder, Mayhem and Madness on Netflix, and I reckon she did kill her husband.
The evidence and clues against her seemed quite strong. This of course is just my opinion and not based on any actual facts, Carole Baskin just seemed very shifty to me, and I got the impression the police were not very competent in doing their job properly.
Apparently authorities are making fresh appeals regarding the disappearance of her ex husband Jack Donald Lewis. If everything said on the Netflix documentary was true something was definitely fishy surrounding his disappearance. Just imagine, she could end up in a cage like Joe Exotic, and it may even help his case to getting released.