I don't get in DH part 2 why did Draco's mum go over to Harry? They hate him.

Narcissa doesn't hate Harry. She's just a mum that does her best to ensure her son's safe. See the Unbreakable Vow scene in HBP. She was then ready to "betray" the Dark Lord to make sure Draco would be protected.

She went to check on Harry to know about her son - her primary concern. Anything else was of no importance, above all the Dark Lord. The 3 Malfoys were appalled द्वारा what Voldemort was doing and this must have begun after OotP, after Lucius had been sent to Azkaban.

Narcissa is just a mum. In this case, she is no different from Lily.

आप clearly haven't read the books, and I have no respect for people who claim to be Harry Potter प्रशंसकों and haven't read the books, as the पुस्तकें are what Harry Potter is all about. The फिल्में are at best, a good summary. So yeah, no respect. Call me mean, whatever. But that's a rant for another time. I will answer your सवाल anyway.
She went over because Voldemort asked her to कन्फर्म that Harry was dead. Even then, even though she knew he was alive, she lied because she no longer cared about Harry या the war. She only cared about finding her son and making sure he was alive. She knew that they could only get back into the गढ़, महल as a victory party.

Draco's mum went to Harry because Voldemort sent her to see if he was alive. However, even though she hates him, she wouldn't sell him out to Voldemort because she was sick with worry about her son's safety and he helped her द्वारा telling her that Draco was alive.

Narcissa didn't hate Harry she was just a mother who wanted to protect her son and her family was और important to her than voldemort, she didn't care who won anymore. The Malfoys were kind of on their own side. Kind of like many of the Slytherins who didn't शामिल होइए either side. I think the Malfoys joined Voldemort at first because they were all for his elitist देखा गया but became disenfranchised with the whole thing when they realized what a monster he was even to his own followers when he stayed at their house and Narcissa (and possibly Lucius when) probably stopped even before that when voldemort told Draco he had to kill dumbledore in order to punish Lucius for his failure because to Narcissa her family was और important and I think Draco and Lucius came to realize that as well द्वारा the time the final battle came around and thats why they stopped fighting for voldemort.

The reason she went over to him is because Voldemort told her to check if harry was still alive.

Voldermort supposedly killed harry potter and made draco's mom check to be sure if he was dead या not. Which of course he wasn't dead! But, knowing that her son was still alive...she lied to voldermort about harry being dead. pay attention to the movie.

Are आप talking about when Harry "died"? I suppose the natural reaction आप have when आप kill something is to check if it's actually dead (You may have done this with a fly आप swatted). Narcissa did this for Voldemort but didn't actually check. Her primary concern was her son, Draco, and she wanted to know if he was alright. So she asked Harry quietly and pretended he was dead, because, for the fist time since the war began, she didn't care for the outcome. All she wanted was her family. I hope this helped you. :D