Another person saying she's in it for her 15 minutes of fame. If that were true she would have spilled the beans decades ago.
As has been said repeatedly the most likely scenario is the papers knew it was her and she had a choice to tell her side or have them publish any old nonsense with a few pics of her as a teen and some sneaky shots of her doing her weekly tesco shop.
Also so fucking what if she makes some money, she kept his secret for 2 decades and he made money off the story so why shouldn't she? Or is it only OK when Harry sells people's private lives for cash?