All of A. R. DeClerck's books on SFR Station.
Sharyn Moran joined the Rangers to save innocent lives. Her personal vow is to never see another broken child in the ERCA Territories again.
They broke his bones, laid him bare, and injected him with nanites, all for the sanctity of life.
She vowed to save his life. He vowed to forget her when it was over.