I think she is the perfect fit for this role and i love the fact that shonda did not use someone that everybody knows.
From the looks she is the closest cut to the adult olivia. I do believe we will be seeing more of her. That also said, does Cyrus know that he has been talking to Olivias dad all this while? I am a bit here on the edge especially after Olivia finding out about that mission and cyrus and her dad having that conversation, i doubt though. (i am sorry if i have given away too much of info!)