Some short period after the above events, and Miss Rebecca Sharp still remaining at her patroness's house in Park Lane, one more hatchment might have been seen in Great Gaunt Street, figuring amongst the many which usually ornament that dismal quarter. It was over Sir Pitt Crawley's house; but it did not indicate the worthy baronet's demise. It was a feminine hatchment, and indeed a few years back had served as a funeral compliment to Sir Pitt's old mother, the late dowager Lady Crawley. Its period of service over, the hatchment had come down from the front of the house, and lived in retirement somewhere in the back premises of Sir Pitt's mansion. It reappeared now for poor Rose Dawson. Sir Pitt was a widower again. The arms quartered on the shield along with his own were not, to be sure, poor Rose's. She had no arms. But the cherubs painted on the scutcheon answered as well for her as for Sir Pitt's mother, and Resurgam was written under the coat, flanked by the Crawley Dove and Serpent. Arms and Hatchments, Resurgam.—Here is an opportunity for moralising!
(Vanity Fair, Chapter XIV)
I understand the context of this passage; I know what hatchment and scutcheon mean.
However I can't truly understand the sentence in bold letters. What does arms mean here? What does shield? (Is it synonymous with hatchment and scutcheon?) And what does quartered, in reference to arms, actually mean in this sentence?
If you will, please explain this sentence to me.
Also, what does answered mean in this context?