Don't pressure her into it, it'll just generate more negative feelings around it. What I tend to do is always talk positively about them and reinforce positive experiences and information about them and taking care to correct any misinformation that comes up (gently, of course).

Some people never get over their phobias. It takes a lot of time and patience. One day she may develop curiosity about it. If she starts asking questions, this is a great sign!

Just remember positive reinforcement. Fostering curiosity is important.. you may even find her wanting hold or touch him some day.