While Siri has gotten better with each new iteration, including iOS 7, there's some things Apple's personal digital assistant needs help with. First an foremost is learning how to pronounce unusual or tricky names. Whether it's your name, or the name of family, friends, or colleagues, it's easy to correct Siri, and have it stay corrected.
That's all there is to it. Siri should now remember how to pronounce that particular name. In some cases, you don't even have to coax her. If it's a name she's said wrong many times, just tell her she's pronouncing it wrong and she should ask you to help her correct it.
Remember that this may not work with all names. She still refuses to say my last name right, but at least she's getting my first name correct now. You know what they say, you can't win 'em all!