noun, する verb
Again you have life! Either this is a rebirth of some kind, or you have received resuscitation and another shot at life. Whatever it is, you have life again, so that's great!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
She believes that there is hope of rehabilitation for her son.