can some explain to me how i get the mission started ive been stuck for 5 hrs giving her amity she at 100 but still does not do anything for me 

its bug

If she is supposed to give u a quest or somethin when u hit 100amity and ur at 100 u can add just a little more to get over the 100. U might also have to do like on the pc where u have to turn on every kind of quest/info in the menu. I saw the option on the console when i played the beta but cant remember without seein it again but when i saw it only the first one was selected instead of all of the quest/info options. The options work as filters so u dont see repeat quests or farmin quests when u speak to an npc.

or it could be bugged i didnt do all the quests so idk which one is bugged or not.