FACTSMan the anime really fucked over this series by turning it into a generic fanservice shitshow and runied it's chances of getting the mangaka more attention.
It's pretty telling that the vast majority of the people reading Ghost Reaper Girl are those who previously read Rosario (certainly it was the reason I read it). It absolutely would have gotten a lot more attention if its anime hadn't been such a piece of shit.
Although the anime did have a top tier soundtrack, I'll give it that.
Still if there was ever an manga that needed the Hellsing Ultimate/FMA Brotherhood treatement, it's this one.