Fear is always a component that confronts all gymnastic coaches.
Pit bars are wonderful, or raise the bars and put soft landing mats under the bars and let the gymnast swing by him or herself. Encourage the gymnast to practice simple sole circle dismounts and then back saltos as their self-confidence increases. Be patient, and offer rewards for improvement. Lots of positive self-talk on their part also will help. The gymnast must program his or her mind to overcome any fear.