Herbs, sorry to hear about DM and, especially, DF. As you may know, I had my left knee replaced almost six years ago. It was done with an epidural and they partly knocked me out. I was in for three days: as soon as you can manage stairs you're out. Enormous swelling, of course. I had to give myself injections in my stomach (twice a day, I think, at first) which was to thin the blood, if I remember, so might not be applicable to your DM. It is essential that she does the exercises they will give her, however she might feel. I had my op on a Monday, I was eating out at a restaurant a few days later, but she may find her stomach is upset because of all the medication. District nurse came in 2/3 times a week to have a look at the wound. HTH. Good luck with it all. I am about to go to see the GP about getting my other one done.
I actually have no experience of dementia, BTM and Herbs, but 
Rose, I suffer a lot with acid reflux, mostly when I am stressed. Liquid Gaviscon is my Go To; I invariably have some when I go to bed, then I am often ok (if I wake in the night I sip water), Good luck with it.
We took the DGC to South Shields on the metro, which was not without incident: fault and change of trains going, and then a fallen tree partly on the line on the way back. It was so cold that I reverted to my winter coat. Lunch was taken at Colman's fish restaurant. I liked the way there was a list of the boats which had supplied the fish for the day. My Whitby scampi was out of this world.
Off to Leicestershire tomorrow.