Does your auntie live Down Under? She could sponsor you with an Australian visitor visa. She is taking on a lot of responsibilities though, so be sure she is happy with the decision.
So what sort of visa is this one, sponsored by family?
Your Australian relatives can help you get together with them for a period of up to one year.
You do need to have some very close and loving family living Down Under to be able to ask them for sponsorship, as this visa is not for the faint hearted.
It puts a burden on them, both financially and morally - they are the ones that guarantee you will leave the country when your visa expires.
The visitor (that is you) fills in and signs the application form and then sends it together with all the required documents to their sponsor in Australia.
As a visitor, you need to be healthy and of good character. For more info see http://www.immi.gov.au/visitors/visiting-family/679/eligibility-applicant.htm
The sponsor (...your auntie, because she offered to help you) needs to be an Australian citizen or permanent resident living in the country for at least 2 years. And she has quite a number of financial obligations. Here are some:
For all the details about this permit and how it works visit http://www.immi.gov.au/visitors/visiting-family/679/how-the-visa-works.htm
If you need more time to stay with your rellies (this is the Australian slang for relatives) you can apply for another sponsored family visit after you leave the country.
Or better apply for an Australia tourist visa, which doesn't involve any financial guarantees from your family. They will be happier to have you around.
Also check the other alternatives to visit. You may satisfy the conditions for the electronic visas. They are quick and easy to apply for and do not require sponsorship.
Read a summary about these options in the Australian travel visa and Australia holiday visa articles.
Good luck with your application.