Make mine and my late sister’s dream come true

My younger sister and I always dreamed of backpacking around the world together, we had the whole trip planned out, and always said when we were older we would do it. In 2015, my sister was diagnosed with 2 very rare cancers and in November 2016, she passed away. This is a dream I want to fulfil for her, but unfortunately I am not able to fund myself, I wish I could but due to unforeseen circumstances I cannot.