Please good brother, I need your help....................................once again

. My daughter is 5 in January and sucks her right index finger. She's been doing it since birth. She also rubs a satin cloth. I used to do this as a child and even now I still rub a piece of satic cloth to calm me down. She's lost her 2 front teeth and I need her to stop finger sucking before her permanent teeth come through. I stopped sucking my thumb at 15 after I was forced to wear a brace. Can you suggest something to help her? I've tried wrapping it up and she put her finger in her mouth regardless. Thanks in advance.
Hotep