Those are some great skills, but they make the Res Ploy that's still in her C slot not only redundant, but more useless as well. Since Atk/Res Solo doesn't boost her base Res like Fortress Res did, she's gonna have a harder time triggering it on anyone, even if you do want to debuff an enemy who didn't get hit by the much more useful Chilling Seal or its splash debuff.

I know people are used to inheriting skills on units, but it is a pretty unique position for a Legendary Hero to have a slot that pretty much has to be replaced. I was honestly expecting them to leave Fortress Res and replace that one with something like Atk/Res Rein, since that would at least mean her skills remain complementary to each other.