Making dua to be friends with a non mahram

Q: I've been asking Allah to make me friends with a non mahram. Its been a lot of time now I see no signs of my dua getting accepted. I am really confused if this is prohibited thats why its not getting accepted or somewhere I found we can be friends with a non mahram with boundaries so if its permissible then why is Allah not accepting it. I've looked up everywhere and I still remain in an utter state of confusion. I cry for this dua every prayer, every rain, every azaan yet its not being accepted. I really don't know if I should wait or give up. If this is right or wrong. Please help me.

Distributing the assets of the deceased among all the heirs

Q: My question is related to inheritance. 

Few years ago my mamu was in Saudia and he used to send money to his parents. At that time my nana bought a piece of land and after he died my mamu claims that since that land was bought from his money so he is the sole rightful heir of that land. Legally my nana owned that land. 

Now I want to know even if the land was bought from his money, do sisters deserve a share from that land or not? If they take their share, would be just or not?