Update: My GF is continuing passionately with her diet. She preps her meals now. She works odd hours so she eats lunch & dinner at work and cooks plenty. Being Filipino, she would eat rice (white) like candy. Also, being Filipino, she cooks for me like I'm her son ("eat more, you skinny fuck").
And she just eats 1 cup of brown rice everyday. She's taking this dietary change very seriously as we are now at 2 months since her blood work. 1 more month to go before her next test. Will she change? Yes, but not go back to her old diet but, rather, she'll just cook new things.