It's probably because she don't want to trouble her loved ones in her previous life and her present family. It is not easy to accept that your daughter/sister/lover/friend reincarnated and living a new life as a different person. It will open old wounds and it will complicate things after all her past loved ones already started to cope with her death. For me I admire her bravery to be able accept her situation and leave her old life to live a new life that is given to her. She also fulfill her past regrets like helping her old family cope up with her death and let them them move one. She may live a new life but she still love the same person and want him to love her as she is.
yeah,,I get that,, but knowing someone you love is alive and healthy it should be enough for them to feel satisfied.. nina's present family is nice and very supportive I don't think they will cause any trouble to nina's previous family.. Even her previous family are also nice and wonderful.
Nice liked it although i really don't get why she can't tell them she's the same person with a difcerent body that's about it man