Christy's Loc Question

Hello all! I received an email from a reader by the name of Christy. She is obsessed with picking out the lint in her loc's, with is causing major damage, including thinning of her loc's. Below is picture of two of her loc's, one healthy and one thinned out because of constantly being picked at.

I have a few suggestions from previous post (link fix & repairing broken loc's - which can also be used to fix thin loc's). Leave a comment for Christy if you also have advice on what she can do to repair thinning loc's. What have been your quick or not so quick fixes?