Mother not sleeping at night. Any suggestions?

One suggestion would be to get a touch lamp next to her bed, and persuade her to sit on the edge of her bed when she wakes up, until she is fully awake. She will be less likely to fall, and with luck will have a clearer idea of the time. Then get a commode and put it on a vinyl mat, for her to use in the night. If you put it right in front of the doorway, she can’t ignore it, and may well use it. It would be a different routine for her. At present her mind is going – get up, go to bathroom, toilet, shower, morning! The new routine could be sit up, look around, commode, back to bed. Good luck!