Does legally adopted daughter have rights in fathers property

Sir, mere father ne apne bhai ki ladki adopt ki legaly in 2000. Ab hum do Bhai or ek bahan h. Humari teeno ki shayadi Ho choki h or bache bhi h. Hamari ancestor property Haryana m h or father ne jo property khud li h, wah Delhi m h. Adopted sister se hamari family wasta nhi rkhti but wo ab apne birth parents ke khne pr property m apna hissa mang rhi h. To kya uska hissa father ki dono trah ki property m h ya nhi or agar h to use kaise rok sakte h or kya adoption ko khatam kiya ja skta h, please guide me