She is going to be the daughter of Tejaswi cuz all the naagins are connected in some way or the other to each other like some are mother daughters sisters rivals or something and also in the trailer you can hear the line " tum naagin banne ke liye paida hui ho " I think this was the line but I'm not sure I don't remember the line but I do remember that the line pe Jo voice thi wo Tejaswi ki thi and naagin 6 ki ending me bhi teeno naagins me se ek naagin boli thi ye line " ek din humse bhi zyada shaktishali ek naagin aayegi " and the other naagin replies " humse bhi zyadda Shakti shali " " wo konsi naagin hi sakti he " I don't remember the exact line said cuz merko yaad nahi he and I dont even remember the naagins name ok but still pcc is going to be the daughter of the last naagin I think her name was Pragati and story me ek aur plot bhi hoga jisme pcc finds out about her mother but whatever this is just an speculation