
It would be to easy or simple for it to be for the murder. I think they would have arrested her earlier in the day. I believe they are arresting her for stealing the money and or breaking the bond agreement not to have contact with a minor under the age 17.
If they had what they needed for murder charges they would have done it during the day.
Could it be they decided since Padilla was not going to revoke the bond they decided to pull out the arrest for stealing Amy's money, credit card fraud because of the protests?
(am I sure the neighbors are REALLY tired of this circus).