Yeah, but thinking on it, a limb could be a bit too gory as well for some buyers, maybe a bone instead, or something less... Fleshy.
Flexing her left hand's claws could work just as well. With the speach bubble gone it probably just needs a little something to fill that gap.
*meh* Brion's the artist and heck, that image already looks good enough that I'd buy it on a shirt. As before, one of the things it has which the others don't is a strangely alluring look to Mary as well as the obvious danger parts in the scars, clothes, scythe and evil grin with fangs and ratty hair.