Thank you for your help!

Feel Script  Suggérée par frd 

Thank you! but I think that there is something else also used for the "S"

These letters are in the "Stylistic Sets". If you click on the "ff" button, on the MyFonts page, and check "Stylistic Set 01" and "Stylistic Set 02", you'll see the "S" and the "F".

Thank You for your help!!