The analyses of a text #4

The narrator recalls his adolescence.
His very poor, old friend Mr. Micawber's family along with the narrator's old nurse's elder brother Mr. Peggotty and his niece are going to emigrate to Australia before long.
He, his great aunt, and his best friends Agnes and Traddles visited Mr. Micawber.
Chapter 57 THE EMIGRANTS
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Here, a boy came in to say that Mr. Micawber was wanted downstairs.
'I have a presentiment,' said Mrs. Micawber, setting down her tin pot, 'that it is a member of my family!'
'If so, my dear,' observed Mr. Micawber, with his usual suddenness of warmth on that subject, 'as the member of your family - whoever he, she, or it, may be - has kept us waiting for a considerable period, perhaps the Member may now wait MY convenience.'
'Micawber,' said his wife, in a low tone, 'at such a time as this -'
'"It is not meet,"' said Mr. Micawber, rising, '"that every nice offence should bear its comment!" Emma, I stand reproved.'
'The loss, Micawber,' observed his wife, 'has been my family's, not yours. If my family are at length sensible of the deprivation to which their own conduct has, in the past, exposed them, and now desire to extend the hand of fellowship, let it not be repulsed.'
'My dear,' he returned, 'so be it!'
'If not for their sakes; for mine, Micawber,' said his wife.
'Emma,' he returned, 'that view of the question is, at such a moment, irresistible. I cannot, even now, distinctly pledge myself to fall upon your family's neck; but the member of your family, who is now in attendance, shall have no genial warmth frozen by me.'
[David Copperfield by Charles Dickens]
1. I'd like to know what "It is not meet that~" means.
2. I'd like to know what "I stand reproved" means.
3. And I'd like to know what "so be it" means here.
Thank you in advance for your help.