Never got why she was considered so good and they kept her in the CIA. At the start of S1 she was chucked out of Baghdad for visiting the man who told her a US soldier had been turned.
Then she muscled her way back in because of her doubts about Brodie and Saul was partly humouring her and partly believed her instincts were correct.
Which they were except she only joined the dots when she stopped her meds and was in hospital. And when she & Brodie were a-cabinning, she believed it was actually Walker who'd been turned.
Plus, he rumbled her cos she made the reference to Yorkshire Gold tea she knew about from bugging his house.
Towards the end of the last series when she found out that Quinn was going to blow Haqqani up she stood on a car/truck near his house having taken her scarf down. She was only saved by (the lovely) Zaf.
The MN Agency would never have employed her.