Please help me visit my mother.

I am Brazilian, married and have a daughter. I live in the northeast region of the country. This is the poorest region in Brazil. My mother lives 3,500 km south. I have no car, no money to buy bus or area tickets or other expenses. My daughter is already 4 years old and has never visited her grandmother, who is already 75 years old. I'm afraid she will die before she can meet her granddaughter. Please help me. Here you earn very little and everything is very expensive. I would have to work almost all year, without spending even on food, to be able to afford the tickets.