User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-185.112.105.215-20171230104541/@comment-30924344-20171231163338

Something of interest to note. This is what is said on Ophis on the Japanese wikia:

However, under the attack of Samael released by negotiations between Hades and Cao Cao, the power is divided in half and falls into a finite body not infinite and left in the pseudo-space field together with Isse. --- しかし、ハーデスと曹操の交渉によって解放されたサマエルの襲撃をうけ、力を半分に分けられて無限ではない有限の身に堕とされ、イッセーと共に擬似空間フィールドに取り残される.

So if she is half her power, than 4x is her full power multiplier. 4x stronger than the HD combined.