If JA were claiming she wasn't there and didn't kill Travis, the palm print would be an issue to prove otherwise. She admitted to being there, to killing Travis. The presence of the palm print is not essential and is already entered into evidence. JM doesn't need it to convince anyone of what it represents. He may mention it but the jury already knows about it. We're way past having to prove she was there and did it. If it proved premed then it would be a big deal. IMO
All true but also....I thought he was going to say how she thought she cleaned up so well EXCEPT for that palm print.