Windows 7 is quite similar to Vista, so a PC with that OS should be fine for your Mum.
This one form ebuyer should be suitable. It has decent reviews too:
This Dell at Argos also has Windows 7:
OnePlus 5 review
See the work of famous artists playing with toys
iPad Pro 10.5in (2017) review
Comment faire une capture d’écran sur un Mac ?