we don't reprimand except in certain circumstances--at dinner table, out to dinner, etc. she can suck her thumb when relaxing, before bed, no issues there. regarding the 'lick and wipe,' we discussed it with her but more as a sanitary issue than a behavioral issue. she's becoming more aware of germs with the school discussing hand washing all the time so we didn't feel we were piling on too much. i think you are right, just let it run its course.