Need Help

Hello friends, I want to first clarify that this Issue is related to wattpad but posting it here in Hope of Help.
I posted an OS on India forum , Tellyupdates and Wattpad in february (On RiKara), Here are the Links of it on wattpad:
https://www.wattpad.com/376966750-rikara-os-when-i-fell-in-love-completed-rikara-os
A girl on wattpad has copied its concept and some Dialogues for her own OS, here's the Links to her works(Its quite clear she copied)
https://www.wattpad.com/story/106118322-rikara-os-imperfections-completed-%E2%9C%94
She even entered in a compitition with it , Now when I tell her this , she is blandly refusing, playing the victim card and threatening me that she'll delete her story because of me. She has used her own description (I don't know if is also copied but not from me). Somebody here who can help me out about the same , I am child and don't know about it ,Please someone (I think even ShivIka fans should go and check her works, if she can copy my , a 14 years old' work then maybe she would have done to you too...)