[def8cefe]

>She had been in living in hiding, most recently in Bradford, N.H., in the mansion where she was arrested, prosecutors said. They said it was located on a 156-acre property that was acquired in an all-cash purchase in December by a limited liability company that concealed the buyer’s identity.

>After her arrest, a private security guard who worked on the property told the F.B.I. that Ms. Maxwell’s brother had hired former British military members to protect her in New Hampshire, the prosecutors said in their filing Monday.

>The guard told the agents that he was given a credit card in the same name as the L.L.C. to make purchases on Ms. Maxwell’s behalf, and said that Ms. Maxwell did not leave the property at all during his time there, according to prosecutors.

I'd imagine the prosecutors were referring to these details. Like you said, I think the author of the article just laid it out in a misleading way.