He is her subject.

I am not.

I wish you joy of the trouble you have brought upon him and upon yourself." "Upon him!" cried Dorothy.
"Yes, upon him," continued Mary, relishing the torture she was inflicting.
"You will enjoy seeing him beheaded, will you not, you fool, you huzzy, you wretch?
I hope his death will haunt you till the end of your days." Poor Dorothy, leaning against me, said faintly:-- "It will--it will.

You--you devil." The girl was almost dead from exhaustion and anguish, but she would have been dead indeed had she lacked the power to strike back.

I believe had it not been for Dorothy's physical weakness she would have silenced Mary with her hands.
After a little time Dorothy's heavy breathing indicated that she had fallen asleep.