He'll be so insulted and try to prove her wrong the more he remembers of himself, it'll be glorious!

It gets even better when you know that it comes with sound effects: since his whole body turns extremely hard you can hear his skin, sinews and muscles grind against each other every time he moves while in that mode ......unfortunately it also means that he can only keep it up for as long as he can hold his breath because stiff lungs suck. Please stab him, it won't be able to hurt him (much) and will probably trigger a memory or two. (He'd also be extremely sorry for making her think she needs to stab him. ;_;)