What inference can you make about the Loisels based on their efforts to replace the necklace?

One could draw the following inferences about the Loisels based on their response to the loss of the necklace: they are both proud and honorable.
One can infer that Madame Loisel is proud because she rushes from the party rather than be seen in her modest outer wraps when the other women wear furs. We learn:

She felt this [difference in her clothes] and wanted to escape so as not to be remarked by the other women, who were enveloping themselves in costly furs.

We can also infer they are both proud because they don't tell Madame Loisel's friend Madame Forestier that they have lost her necklace. Instead, they make up a story about the clasp being broken to buy time. We can infer it would be humiliating for them to confess that they were so careless with a necklace she was kind enough to lend them as to lose it.
They are honorable in that they work and scrape for years to replace what they think is a costly piece of jewelry. It never occurs to them to go to Madame Forestier and say that they are sorry, but they can't afford to replace the necklace. It also never occurs to them to do anything underhanded, so as resorting to crime, to try to make up for the loss.