Please help me get to England

I am seeking your support to enable me to visit my younger brother in January in the UK. He is living there now with his young family, a lovely partner, and a two year old daughter with special needs. They have recently had another child, who has the same condition as her sister and is currently in NICU. Separation from his family is not easy for my brother, and although he is well loved and cared for by people over there, under the circumstances he misses the support of his own family near. It would mean the world to both me and him if I could go and spend some time with them, to meet my newest niece and be alongside them for 3-4 weeks in January 2018. My family in NZ support me in this, and will help care for my family at home, but I can ill afford the fares to travel. If you are able to contribute something towards getting me there and home again I would be extremely grateful.