Hello

Sirus_me

You have two option.

For her to come to US

First Option

Step 1--You both guys can go to Nepal and get married.

Step 2-- She can come to United States from two different ways; apply as a student and come here and join college here. After a year, she can file for a work permit ( part time -saying her financial circumstances changed). If she can provide right documents, she will be approved. But she will be in F1 status and she has to follw F1 rules.

Second Option:

Step1-She can come to US in a toursit Visa/Student visa. You guys can get married here.

Step 2-- If she does not want to be in a student visa, she can change her status to dependent visa. She neither can not go to college nor can work here.

To Work here

If nothing changes and if everything stand as if it is

If she has completed her nursing degree from Australia; she can join grad school. Apply for CPT and work.

If she is an undergraduate and is still going college, she can apply for OPT after she finished colleges here and work for 1 year and then join grad school.

Or if Congress changes the law on coming years; then there can be comepletely different scenario.

Hope it helps.

Thanks