So, we get the sense that Mrs. Copperfield is flighty, easily distracted, and spoiled. She means no harm, but she also doesn't have the strength of character to resist a clever, brutal fellow like Mr. Murdstone. Mr. Murdstone flatters Mrs. Copperfield: when David repeats to his mother that Mr. Murdstone called her "bewitching" (2.91) and a "pretty little widow" (2.93), Mrs. Copperfield blushes, laughs, and is generally very pleased. It's these compliments that bring Mrs. Copperfield to accept Mr. Murdstone's proposal of marriage even though her most trusted advisor, Peggotty, can see something is wrong with the man.