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:
Nokia 8 vs Galaxy S8
How artist Alex Yanes worked with his daughter on this bright 3D mural for Monument Valley 2
iMac 21.5-inch (2017) review
Comment regarder le lancement du Galaxy Note 8 en direct ?