If she took the immunity, she’d lose her pension I bet.
Immunity is the worst possible option for us. Once she has immunity, she can do a “Lewinski”—give them nothing incriminating. Unless a deal can be worked out which grants immunity only if she names names, we’re screwed. If the decision were solely up to her, I think she’d talk. But since she’s completely under the control of her bosses (Holder, Jarrett, Obama), she will reveal nothing. She may do time, but Obama will pardon her on his last day in office.