Nicole's letter is just that...a letter. She did not file anything formal with the legal system, nor even have that Nashville lawyer draw up something legal. She gave him a letter to be delivered to Justin, who was to give it to Chloe in the event something happened to her. (and that was lame, lame, lame). Why not just address it to Chloe, tell Nashville lawyer to mail it, or deliver it to her himself? Or mail it herself to Justin, with the instruction to give to Chloe in case of Nicole's demise?
Maybe Nicole does already have something legal done in court, and this letter is just an additional??