"Be who you are & say what you feel because those who mind don't matter." Interesting dictum, Jodi Ann Arias, considering the verdict. You ARE a convicted murderer and the jurors & citizenry did mind and we DO matter.
Speaking of murder, Arias was not charged with second degree murder in the alternative. She was charged with premeditated murder one &/or felony murder. All jurors found her guilty of premeditated murder, every one of them. It was the defense that threw another option at the panel via the jury instructions, because their position was no capital murder had been committed. Therefore the theory of each side was consistent within its own perimeter.
We know Arias had the requisite mens rea (criminal purpose) of premeditated murder because she stole the .25 auto gun in furtherance of her deliberate guilty intent & design. She also acted covertly in all of her ensuing moves: the non descript car not her own, the secrecy about the trip telling only Brewer she was going to Mesa, the shell games with gas cans proprietary, bought & borrowed, the shut off phone, the people she was going to meet and didn't, the avoidance of tire tracks in AZ, etc.
Now if at some point she thought, "If he denounces his aspirations toward Mimi" or "If he changes his mind about taking me to Cancun", I won't kill him after all, but then ends up exerting herself in a monstrous over-kill, do we assume she acted out in violent & uncontrollable rage engendered by a blow or other provocation? How very convenient the gun and knife were at hand to serve this spur of the moment reaction! But no, the mind doesn't operate on sums like 6+5+8+3=22 take away the 8 and we now have 14. It is not linear. Once that 8 is there, it registers far and wide. Trying not to think of that 8 is like trying not to think of the pink elephant in the room. That 8 is in the room of the mind. Not that I believe Travis struck a blow or provoked his own death by taunt or any other means, we see his surprised face in the portrait photo. But if he had, her reaction would only have revived her original well equipped criminal intent.
This holds true even if she felt quite loving during a bedroom romp & thought how silly of me to ever contemplate killing this man (the photos belie such feeling, however). No, any anger suddenly aroused in the bathroom, rests on the sustained mens rea of late May. You could say one thing builds on another. It's not like the Survivor T-shirts, where the purple pricier ones replace the original white shirts. Those were losing money.