Who is "the enemy"? It is not the people, although the demonic realm is using them, as they are allowing themselves to be used. What are these "things" that they want? One "thing" they can never have, unless you let them have it, is the love you poured out on your grandmother while you lived with her and cared for her to the very end. Why did you do it? Jesus said that when you do things in love you do it to Him. So, these relatives are not doing these things to you, they are doing it to Jesus, also.
Matthew 5:38-42 (KJV)
38 Ye have heard that it hath been said, An eye for an eye, and a tooth for a tooth:
39 But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.
40 And if any man will sue thee at the law, and take away thy coat, let him have thy cloke also.
41 And whosoever shall compel thee to go a mile, go with him twain.
42 Give to him that asketh thee, and from him that would borrow of thee turn not thou away.
The above passage is what Jesus said to do in the case of someone wanting something from you. Give it to them. God can bless you with bigger, better, and greater things than what you now have. You can look back at a later time and you will wonder why did you want those "things" after God has given you the things you deserve and what God wants you to have.
In the name of Jesus, I bless you with the life of God. Thank you Jesus.