Have you already looked into ayurveda? I can't give any concrete advice, as I'm only researching it for about a week now, but if you haven't, you might wanna test what @puravidaville 's dosha is and what they recommend to balance her dosha.

It might be that the advice is to mainly have warm / cooked food, for instance. There's a podcast called 'The Simple Ayurveda Podcast' with short episodes that explain things pretty well.

I wish you a speedy recovery and send you some positive energy from Portugal