User blog comment:Just a passing through Master/Caster of Permafrost Empire/@comment-38196594-20190717022141/@comment-32751919-20190717041340

She can be Ruler-class, actually, but due to her saint graph classified her as "Caster", that make her power as commanding is "lower". If she was summoned as "Ruler", her magic power would be lower, but exchange for her far more broken ability like controlling servant that could even surpass Jeanne and Amakusa, and this time, her drawback is completely gone. (So, Alexander might not safe) //Stheno's smug//

PS. Didn't stop her for have her own manipulation skill.

Also, that power is lower because she isn't true Romanov.