Your example shows a lizard woman with breasts. So to me, "what makes sense" isn't expressed by that example.
I like breasts as much as the next person, but felines of all sizes only have visible breasts when nursing. It would make sense, then, for fem Hrothgar PCs to not have much if any visible breast --
as a I posted previously, the slider could go from "none" to "A-cup." And I don't see much use in fem Hrothgar being just another hourglass body with fur and a different head.
It's not like women need large breasts to be beautiful, after all.
There's some very beautiful small-breasted ballet dancers out there, for example.
If fem Viera bodies are modeled on super-models, maybe fem Hrothgar could be modeled on ballerinas.