What to give a person who has everything?
How about beautiful slippers designed and handmade especially for her, with felted soles which reinforce them and help them live longer.
These slippers are without the embroidery, perfect for the same level of cosiness but with a more grown up feel, perhaps you're entertaining so don't want to look quite so casual.
Height of socks is just below calf when worn, making slipping them on and off nice and easy.
Small - UK 4-5.5 (24-25cm length on bottom of sole, 19cm high from sole to top of cuff, 25-27cm around calf)
Large - UK 6-7.5 (26-27cm length on bottom of sole, 20cm high from sole to top of cuff, 26-28cm around calf)