Artist's commentary
[oc] “I understand how my mother’s weapon works now.”
Tonia mastered Sangue Vile but Almonde fully realized it due to her own regenerative capabilities, to the extent that even with all the other funky powers she racks up over 400 years this is still the strongest weapon she defaults to when facing actual threats. Tonia could fire a single blood arrow at near mach speed, Almonde could fire a *torrent* of blood (think Neuvillette’s hydro blast) at similar speeds. Or have the blood cells within vibrate so fast they effectively combust into red flames. Or harden it within not just a localized limb or two but all over, though at the pesky risk of thrombosis if she held it too long.
Only saving grace is Sangue Vile cannot control the blood of others (but when she’s older she figures out a gruesome workaround to that by just forcibly transfusing her target’s sinew with her own blood and controlling that instead)