There is no evidence of it, if there was she would have been arrested.
The murder for hire allegation was made by some guy who went to the police claiming that she did, but when they tried to do a sting that would have gathered evidence to support his claim, she called the police instead, not knowing that the people in the sting WERE the police.
So, that means that the allegation is very likely bogus. Just some guy getting his 15 minutes, and of course, since everyone would like to arrest her for something/anything, they didnt question it too much. Stuff like that is far too convienent to close, so they leave it hanging open.
And, judges DO give those orders on a whim, as long as there is an open allegation and a situation like this, pretty much every judge is going to err on the side of caution. It is better safe than sorry. If the husband wanted to get separated from her, but not lose custody of his daughter in the process, his son suddenly and inexplicably dissappearing is a golden opportunity to do so. The sudden breakup of their marriage sure makes it look like he used that opportunity.