Maybe she thought it would be an interesting experience and she saw an opportunity that could have been fruitful? Geeze TF, have you never done anything in your life just because you thought it might be something youd want to try?
Imagine how good this could have looked on her resume if it had been pulled off a year or so ago! Im sure she has her reasons for doing so, and Im sure they made sense to her when she did take the job.