Thread:AnnabellRice/@comment-24991799-20161101191135/@comment-16461120-20161101213125

For Nico, I believe they explained that the blood shed when she lost her arm paid her required sacrifice far in advance and there's some indication tht the arm Chase built her may actually make future bloodshed an internal process rather than external and visible.

For Elsa, I'm not very familiar with the character, but it alleges that one of her hands was refashioned by her part of the Bloodgem at some point.