Answer:
1. because she found out it was a fake
2.After Mathilde Loisel borrows Madame Forestier's presumably expensive necklace to wear during an aristocratic ball, she ends up losing the necklace, which she believes is authentic and made with genuine diamonds. Mathilde Loisel and her husband end up buying an authentic replica of the necklace, which costs them thirty-six thousand francs. In order to afford the extremely expensive necklace, the couple spends their inheritance and borrows the remainder of the money. Mathilde Loisel and her husband move out of their apartment, get rid of their servant, and Mathilde ends up working strenuous jobs in order to pay off their debt. It takes Mathilde Loisel and her husband ten years to pay off Madame Forestier's authentic necklace
Explanation: if this is wrong im sorry
