Well, conspiracy to murder, since she wouldn't have actually pulled the trigger. Conspiracy is a more serious charge than solicitation.
As an aside, I was once a witness for the prosecution in a criminal trial. I spoke with the assistant DA, who was an affable chap about my age, but I couldn't help smirking throughout our conversation. What he didn't know was that I knew, because I had researched him before the trial, was that eight years earlier he had been suspended for offering an undercover female vice cop twenty dollars to suck his dick.
Don't know what's worse, being a scumbag or being a cheapskate.