Might be a bit early for Harry Potter. Maybe save that for when she is 10 & about to turn 11 .

You could always steer her straight over to the Magic Wishing Chair, there's a whole series of those.

Others that I remember reading & loving around that time were books like Milly Molly Mandy, Mrs Pepperpot, and The Little White Horse. Charlotte's Web (of course). Heidi. She's probably not far off from The Lion The Witch and The Wardrobe. And I loved (with a passion) The Secret Garden.

ETA I second Truly Tan, that was big with my 9 year old niece last year.