That said, I don't understand why, once she was in Germany, she didn't call the FBI at that time to find out what the heck was going on. Since she's not on US soil she doesn't have to worry about the FBI physically tracking her down, and if the FBI asks questions she doesn't want to answer she can hang up. Worst case I can think of is the FBI asks a question with at least one potential answer that would incriminate her, she feels uncomfortable answering for whatever reason, and the FBI then interprets her ending the call there as suspicious (I don't believe the right against self-incrimination applies in this particular circumstance).
Edit: As mentioned in another reply (https://news.ycombinator.com/item?id=11631827), I'm not suggesting that she should give information to the FBI or otherwise cooperate. I'm suggesting she should seek information from them, with the proviso that she will not be answering questions (and therefore her refusal to answer after being asked a question will not be suspicious). Heck, since the FBI indicated they don't necessarily believe her lawyer represents her, she could just call them and say "Please talk to my lawyer <insert name here>, he represents me in this matter" and hang up.