First things first, ring Centrelink on 136150 and let them know what's happened. They will go through the eligibility criteria for FTB A & B, Parenting Payment Single and Rent Assistance. Once they go through the eligibility criteria, if it looks like you might be eligible, they'll go through a quick interview with you and send you out all the paperwork.
If you want to have a look at the eligibility criteria before ringing them, it's here: Payments to help you raise children
Sending you huge hugs hun. I really hope things work out for you.