What proof do they have that this "solicitation of capital murder" even occurred? Unless the landscaper was wearing a wire, there is no tape recording, no eye/ear witness, nothing to prove that what he says is true, AFAIK. It's his word against hers. I doubt that those charges will stick, or they would have arrested her as soon as they found out about it. I don't think a grand jury would indict her without some solid proof.
I'm not holding my breath until they arrest her or charge her for Kyron's disappearance either... they need some solid evidence and I doubt they have that right now. Cell phone pings are not enough... it only proves her phone was there, not that she was. Now, if she was texting someone about it... that would be a different story.
When they get ready to label her a suspect... she's already cuffed and on her way to jail, count on it.