When my toddler was a little baby my boyfriend accidentally cut her thumb with the nail clippers and she has always had a little scar where he did it. Well she is a thumb sucker and she is sucking her thumb that much the skin where the scar is has peeled off and she keeps picking it. What can I do to stop her sucking it or is there a way I could get her to suck the other thumb while it heals? She only ever sucks that thumb (right)