Secret agency with immortal woman

I am looking for the name of a series in which a secret agency stopped people who were abusing their supernatural powers, and among them was an immortal woman who was admitted to a fake hospital in one episode and her bone marrow was removed They removed sense and unconsciousness, and in the other part, the same woman killed someone’s mother so that she could use her power to turn back time. This series is likely to be after the year 2000.

The Gifted? It’s about mutants running away from the government in the X-Men Universe. I don’t remember seeing an immortal woman, though.