Magica Quartet said this quote

Madoka: Won't anyone notice that Mami-san is dead?Homura: Mami Tomoe's only relatives are distant relations. It will be quite some time before anyone files a missing persons report. When one dies on that side of the wards, not even a body is left behind. She'll wind up forever a missing person... That is what happens to magical girls in the end.Madoka: ...That's too cruel! Mami-san has been fighting all alone for a long time for everyone's sake! For no one to even notice that she's gone... That's just too lonely a fate...Homura: It is just that kind of contract that gives us the power in the first place. It isn't for anyone else's sake. We fight on for the sake of our own prayer. So for no one to notice... for the world to forget us... That is just something we have to accept.