Which word best describes the author's tone in this excerpt from "That Spot" by Jack London? I don’t think much of Stephen Mackaye any more, though I used to swear by him. I know that in those days I loved him more than my own brother. If ever I meet Stephen Mackaye again, I shall not be responsible for my actions. It passes beyond me that a man with whom I shared food and blanket, and with whom I mushed over the Chilcoot Trail, should turn out the way he did. I always sized Steve up as a square man, a kindly comrade, without an iota of anything vindictive or malicious in his nature. I shall never trust my judgment in men again. Why, I nursed that man through typhoid fever; we starved together on the headwaters of the Stewart; and he saved my life on the Little Salmon. And now, after the years we were together, all I can say of Stephen Mackaye is that he is the meanest man I ever knew.

-excited
-ironic
-indignant
-playful

Something is indignant when it is not fair or wrong and that makes a person feel angry. Firstly, we can see that along the text the woman is angry with him because his actions, for example: "If ever I meet Stephen Mackaye again, I shall not be responsible for my actions." Aditionally, she expreses regret of have nursed him and starved with him because she thought he was an honorable man but in her own words he ended being "the meanest man" she ever knew, so, she expreses that good actions she did were wrong as he did not deserve them.