Thank you greygoose, shaws, and clutter - thought over your advice and decided to just be plain in my concerns. My friend has agreed to blood tests so have ordered vitamin check 2 plus and selenium also magnesium from medichecks. At least this is a start.
I don't think it is thyroid but there is a history of PA in her family which she knows about but water off a ducks back! Hope I don't end up with egg on my face this end and her out of pocket big time.
Thank you all again for your help.