If you're looking for a French equivalent for the name "Sadie," you could consider:
* "Sadie" itself - It's a common name in France and is often used in its original English form.
* "Sophie" - A classic French name similar in sound and meaning to Sadie.
* "Sarah" - Another common name in France that shares the same biblical origin as Sadie.
* "Solange" - A French name meaning "sun" or "sunshine," which could be a beautiful alternative.
Ultimately, the best French equivalent for "Sadie" will depend on your personal preference.