Especialy since her saw on DMM triples her attack and defence while making her a duelist with 1 block while also healing herself...
I also had her on nutaku and used her a lot until grace took her place most of the time, but i did always wait for her saw to hit nutaku. A while long shizuka was actualy considered top plat in DMM. I wouldnt complain about 2 op healers either. And Dorothea luckily isnt a healer, eh. Wouldve loved her, shes the damn dark elve queen and boosts all elves and dwarfs attack by 10% including units like Teeny, Spica and Shade.