She's torn between anger and an ill kind of whiplash at his words, because who is he to say such things? She knows The Doctor. He's her best friend in the whole universe, and for someone to claim his name and disavow her existence in his life is going too bloody far.

She swallows back the tremor trying to work its way into her voice, and beetles her brow.

"A problem other than you being completely mad?" she snaps.