1st. Do Mason quest until he asks you to call Judy or Melanie. Before calling her make Rose do multiple trips. At least 3 times to when you ask her to call Judy or Melanie she will call other girl instead. After that you will see a black haired girl standing next to you. Talk to her, then complete all objectives and talk to her again. This time she will appear on top of the cave.
2nd one do same quest but call Melanie instead of Judy