Hi. Chiming in as a parent myself, with some suggestions that I would have let my kids watch at that age:

• Mitsuboshi Colors - Good, clean fun childhood adventures of 3 young girls.
• Strawberry Marshmallow - Same as above, but heavier on the comedy side.
• Cells at Work! - Educational about how the body works, though there is some fighting and battle shounen tropes.
• Flying Witch - magical slice of life that instills a sense of wonder.
• Keep Your Hands Off Eizouken! - 3 creative high-schoolers are fighting to keep their animation club. This is the one to watch if your kid has even the slightest interest in art.
• Sleepy Princess in the Demon Castle - a heartwarming comedy that humanizes monsters as super friendly. Might be a good watch if she’s afraid of monsters. Even a good watch if she’s not.

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I personally rate each one of them very highly, but I’m not sure whether they have dubbed versions or how good they are.