Hello,
1.It's possible to get SCM-835-NP. She is one of the 6 ghosts that need to be seen in the specific location before she appears like other ghosts.
2,Flower lamp is used to see invisible things. Such as ghosts, secret portals or doors. Carrying it around doesn't mark it as used until it comes in contact with such things.
3.Yes.
4.Lamp puzzle can be solved but nothing will happened in the quest.
5.You need have sex with her when in void. After that you can catch her. Talking to her in base level she will ask if you want to go to void with her.
6.Yes, but no reward from this quest. It only helps you continue another quest. That one is not in the game yet.
Yes, that was the only ghost I forgot to capture during the testing.
It's already nerfed a little. Once Lucky Charm equipment is the game this mini game will become so easy.