I think it is hard to let go easily when you share children and a love with a woman, but that doesn't mean the relationship is right for either one of you. The love may have been there but that doesn't mean the fit is right. Do I think she was playing games? I don't think that..I think she gave what she was capable of and may have been uncomfortable in her own skin and that is why she was so hard on you for most things..many people find fault in others when they do not feel great within themselves. So, while I know it is hard to fully move on, but it sounds like you are in a good place with yourself and with this new woman. Know that the love was there, but that the fit may not have been right to make it work long-term.