Hello .
I hope your mum recovers well and quickly.
I found products from this company very good,
https://www.norinse.co.uk/nilaqua.html
I used their body wash and shampoo on my mum for a long time. They kept mum's skin and hair in lovely condition as well as clean.
One thing you have to remember is, it is the towel drying that does the actual cleaning.
You may well find body wipes easier , also no possibility of accidental spills causing bet or bed linen to be wet.
Whatever brand you buy do make sure you can warm them up as whey will strike cold on her skin
Speaking of cold, I found it is best to ensure the room is really warm when bathing someone
Sorry if you already know this
Watch out for any areas going pink or red. They could be the start of a pressure sore and need urgent attention