fruit tingles really help with taste and mild nausea. I found they helped with strange taste too during the actual infusion. Eating when hungry, my go to was vegemite bagel chips, drinking a lot of water each day, I had a jug of water ( 2lt) that I filled each morning so I could moniter how much I drank, and if your mum is able to, walk each day, even 20 minutes will help.like @ddon said, dry nose leading to blood nose can happen, there is a lubricating nose spray (made by fess with sesame oil) that helps and also paw paw cream in each nostril at night. Hope all goes well for your mum, your support will be the biggest help