I appreciate your post on Fanny and I have three examples to add.

Even before Fanny worried she might not be able to ‘appear properly submissive and indifferent’ (23) when Lady Bertram said she could not spare her Fanny was feeling denied of a pleasure for no good reason. When asked Fanny said “If you cannot do without me, ma’am—” said Fanny, in a self–denying tone” (23).

Fanny knows she does not deserve the treatment she receives from Mrs. Norris: ‘Fanny, not liking to complain, found it easiest to make no answer…’ (27). If Fanny feels she has reason to complain then she is aware of the injustice. Fanny also thought she did not deserve what she saw as dishonorable treatment from Henry:

When she did understand it, however, and found herself expected to believe that she had created sensations which his heart had never known before, and that everything he had done for William was to be placed to the account of his excessive and unequalled attachment to her, she was exceedingly distressed, and for some moments unable to speak. She considered it all as nonsense, as mere trifling and gallantry, which meant only to deceive for the hour; she could not but feel that it was treating her improperly and unworthily, and in such a way as she had not deserved; but it was like himself, and entirely of a piece with what she had seen before; and she would not allow herself to shew half the displeasure she felt, because he had been conferring an obligation, which no want of delicacy on his part could make a trifle to her. (31)

Of course standing up to Sir Thomas was very hard and the rant was demoralizing but when Fanny is more composed she still believes her decision to be right: she trusted, in the first place, that she had done right: that her judgment had not misled her. For the purity of her intentions she could answer (32). Fanny showed courage even though she was afraid and miserable.