Board Thread:Fourth Databook/@comment-4271790-20141104211032/@comment-2120712-20141104232645

I am gonna guess that like her dojutsu, her body based abilities also mutated and became weaker down the generations until we get stuff like macabre bone pulse. Her Kekkei Mora seems to allow her to control various aspects of her body fro various effects and these effects separated and specialized over time through her descendents to the point that they are not Kekkei Morea but Genkai(thus bloodline LIMIT), as they have a limited form her powers in some way.