Lyric discussion by key13 

Cover art for Blood lyrics by In This Moment

I think it's about being with someone she loves but who hurts her and eventually she is so tormented it drives her to resent the few kind things he does do for her (perhaps because it feels insincere from someone who has harmed her) and crave more of the abuse. Its about how the victim can come to feel they deserve what is happening to them and it changes their perception of what is normal in a relationship.