Mommy Dearest . . .

When reading/watching Harry Potter, the two moms that come to mind are Lily Potter and Molly Weasley.
     Lily -- the mother who willingly die to protect her son when she was given the option of escaping to live on (supposedly. This is Voldemort we're talking about . . . )
     Molly -- the mother who had more children than anyone else in the series, but had enough love for her six sons and one daughter as well as Harry and Hermione, even before they married into the family.

Both of these women are to be admired as strong, good  mothers. 

 . . . But what about Narcissa Malfoy? Just because she is a Malfoy serving Voldemort (possibly only under the influence of her husband) doesn't mean she is an evil or bad mother.

Lets look at the evidence:

1. She disobeys Voldemort's direct orders to protect her son in Harry Potter and the Half-Blood Prince. She appeals to Snape, knowing that she could be punished or killed for speaking about the plan, so that Draco will not die in his attempt to kill Dumbledore so that he won't die.

2. In the same book, she defends Draco at Madame Malkins. She may have been snooty and rude, but it was all for Draco's benefit and protection.

3. In Harry Potter and the Deathly Hallows, she is the one to check if Harry was dead or not. She pronounced Harry as being dead because he was able to tell her Draco was still alive in the castle. We have to question what she would have done if Harry said Draco was dead, but that is not the point. The point is that the question was asked out of concern for Draco.

4. In the movie (Part Two), Draco seems to be debating on whether or not to walk over to the Death Eaters. When Lucius pleaded him to join their side again, Draco remained still. It wasn't until  his mother called gently and offered her hand out to him that he crossed to the other side. This could be because Draco loves his mother more than his father, but logically, that reason is because Narcissa is a good mother who knows how to take care of and speak to her son. Then, she takes Draco by the hand and ditches all the Death Eaters because she never cared for the war or Voldemort; her dedication was to Draco alone. Of course, Lucius ends up leaving with them, he does it looking over his shoulder to make sure he wouldn't be killed for leaving; Narcissa, on the other hand, never turns back. She was able to remove her son from danger and that's all that mattered to her.

I feel like quoting Wreck-It Ralph -- "Just because you're a Bad Guy doesn't mean you are a bad guy."

Just because your family serves Voldemort doesn't mean you are a bad person or Death Eater. Either way, Narcissa is still a good mother, Death Eater or not, because being a Death Eater has nothing to do with the kind of mother you are and Narcissa is a good mother.