Complex sentence: Doyle is a political appointee in her mid- 30's who is now leader of NTAC following Nina Jarvis's dismissal, and Tom Baldwin's new love interest following Alana Mareva's re-abduction.
Split into simpler sentences: Doyle is a political appointee in her mid- 30's who is now leader of NTAC following Nina Jarvis's dismissal. Her character also will be Tom Baldwin's new love interest following Alana Mareva's re-abduction.