My sister and I have always had a strained relationship, in 2012 my niece was born and since then she has slowly cut myself and my Mum out of her and my niece’s life. She is a very controlling person and was jealous of my niece getting on with myself, she was even jealous of Santa, preferring to give the best presents from herself. It came to a head in 2019 and we have had no contact since. We continue to send presents, I gave presents via my dad the first Christmas. We have sent presents each year but have no idea if she received them. This year we sent presents for her to return them all opened and with a note saying anything sent further will be returned to sender. I am concerned from my niece as she is now starting to cut her off from her grandad (my dad) and my brother. I am now thinking that that we won’t be sending anything further as it is just to hurtful and just have to hope that my niece will contact us when she is older (she is 13).