Lash picking is a type of trichotillomania
Picking out any kind of body hair ( scalp, eyebrows, eyelashes, beard hair) that you know you should not do but cannot keep yourself from doing it , is called trichotillomania. Trichotillomania is not uncommon in children but unfortunately using Latisse would not help. Latisse allows the hairs to grow longer, but if they are not there to begin with, would be a wasted effort. A consultation with a child psychiatrist would most likely be helpful.