Naughtiest Girl, Mallory Towers, Twins at St Claires, Alison Uttley stuff, Dick King Smith, Enid Blyton in general, Narnia, Ballet Shoes, Swish of the Curtain and all those sort, Gobbolino the Witches Cat, Worst Witch, Holly Webb animal ones and Maisie Hitchins, Ottoline books (I have seen them recommended, not read them), Original paddington chapter books which are really lovely, Roald Dahl, Enchanted Wood and Wishing Chair ones, Charlotte's Web I remember reading in Yr2.
Remember just because she is capable of reading harder books doesn't mean she can't still enjoy an easier read so don't rule out things that might on first glance seem too short or more basic language. My daughter likes to do a more challenging longer book then a couple of shorter, easier ones then another longer one etc.
will come back if I think of more.