Bhool bhulaiya (2007) mystery

Well the debate is still about the ghost or psychological disorder. I have some questions 1) when chachaji warns avni about third floor he says there are 2 spirits locked there. 2) can it be that manjulika understood about akshay kumars analysis of her and pretended to go with it just so he wont bother her 3) chota pandit still saw someone and went mad.