I'm honestly not too sure. Jodi Arias is not like other human beings. Amongst all the other things she is, she is also a self deluding liar who can turn black to white and day to night in her own warped mind. I think she will be buoyed by the inability of the jurors to agree on sending her to death row. Willmott's smile when it was announced shows that they are not displeased, and I think she will encourage Jodi - 'we've got to four of them, we only need to do the same, or even less next time ... and we are home and dry'.
Jodi isn't going away into retirement, skulking away in her cell. Her defence team are going to be reviewing evidence, rewatching the trial, taking note of juror comments even from positive (to them) jurors like the foreman who said she didn't do herself any favours on the stand, probably honing in more on 'emotional' and 'verbal' abuse .. rather than trying to persuade that she was battered physically and that he was a paedophile ... both of which failed to persuade.
As the prosecution will be reviewing every detail, so will the defence and I really think Jodi will be buoyed up by this. She thinks she is so intellectually superior and persuasive (manipulative in our language), I think she will thrive on the challenge of knowing that she's going to get another shot at it, and this time (in her mind) she'll do better. She'll be running it over and over in her mind - every move, gesture, mannerism, word .. and rehearsing for her next Oscar winning performance.
I personally think she'll come back full of beans, I really do. She thrives on scheming and planning and rehearsing ... and she is so self delusional that a few positive words from Wilmott and Nurmi and her other supporters will have her believing that she's 'won' somehow and only needs to improve on her performance to 'win' again. I personally think she'll be humming (or singing :floorlaugh
quite happily to herself in that cell of hers as she awaits the retrial of the penalty phase. Not least, it means she gets the limelight she craves, once again.
Just my opinion of course .. but I don't think anyone, anywhere, should underestimate the capacity of Jodi's own self delusion and her ability to lie to herself as easily as she lies to everyone else.