1.The quest is not complete as of Ep.15
2.She has lvl 60 pokemons
3.When u buy all of them u get an item and there will be no new pokemons
4.U can get a Piplup there is an event u can check the pokemon location guide for more info.And there is an event that lets u get a Tyrantrum and an Aurorus if u have a Helix fossil