No, she may be getting a deal (allowed to live the rest of her life behind bars) for information...
The timing is interesting, given that this arrest occurred just after the head of the SD of NY office was forced out. The interim head is the person giving a statement.
No news reports (that I have seen) tell anything about the arrest further than “was taken into custody at 8:30am”. No location, no indication of circumstances. That certainly fits with surrendering herself under a deal.