You get an allowance, pocket money. Not a salary, whilst under training. I don't know the amount, but it's about AUD 130 a week. Pocket money.
Help with a visa? No. You're not working in Australia, you're "studying". If you want your dearly beloved to join you, apply for a visa for her. It's an easy, online process (unless there's a reason why they may not want her there, in which case, good luck).
Just as a matter if interest, have you read any of the CX documentation regarding the course, or even googled "Australian visas"? Have you read ANY of the preceding posts? Anything? Your "passion" for flying taking up too much of your time?