Here are some excellent, coeliac-safe dining options in Sheffield—whether your granddaughter is in the city center or exploring nearby neighborhoods. These have strong reputations for gluten-free awareness, clear labeling, and safe practices:

Nue Café & Deli Gluten Free
Sharrow Vale Road, Sheffield, UK
100% dedicated gluten‑free café and deli—Italian‑Celiac chef, pasta, pizza, cakes 
atly.com
Cello Coffee House
Greenhill, Sheffield, UK
Coeliac‑friendly coffeehouse with breads, desserts, brunch 
atly.com
Pho (Leopold Square)
City Centre, Sheffield, UK
Vietnamese restaurant with allergen‑friendly & marked GF options 
atly.com
Ego Mediterranean Restaurant & Bar
City Centre, Sheffield, UK
Mediterranean menus with dedicated GF menu and kitchen space 
atly.com
Akentannos
Sharrow Vale Road, Sheffield, UK
100% gluten‑free Sardinian bar & restaurant run by Coeliac chef 
atly.com
Cosy Chameleon
Abbeydale Road South, Sheffield, UK
Cafe with reptile encounters and GF choices 
steeliac.com