Help me meet my sister

Enter details of your update here hi all,im a 38yr old mum to 2 beautiful kids, aged 12 and almost 5,i have a partner of 20 years this month, and he has a brain tumour, so as you can imagine, juggling things just with my partners illness can be stressfull on its own, without any extra stresses or worrys that life can throw,well i have come on here to attempt to be able to make a dream come true, i met my birth father at the age of 19 and many of my brothers and sisters, but still to this day i havent met my oldest sister Lisa as she lives in australia with her beautiful children and grandchild, as finaces are very tight living on a invalids benfit, and my dream is to met my beautiful sister lisa, she is coming home to nz in april for my dads 60th birthday and all the family is going to be together in gisborne ,i live in the south island and its been 18mths since i last seen dad when he travelled to me, but its been 10 years since i have seen all my other siblings and then lisa i havent met,and i would just like to be able to say to my family that we are going on a holiday to grandads in the north island to met my sis for the 1ST time, and none of my siblings up there have met my almost 5 year daughter abby, its hard writing this with tears flowing as in reality i know the chances of this being able to happen is just to far out of reach,as it will be about $4000 for airfares,accomadation and travel (dont own a vechile as my partner cant drive now due to illness)and im hoping that anyone that takes the time to read this could please spare me a $1 to make my dream come true for 2014, love to each and everyone of you,