Help me make the world a better place

Hi! first of all my name is Laura and I have a brother with autism, his name is Juan Manuel and he goes to a special school, in mu country this schools are very expensive and my parents(mum and stepfather) are struggling a lot to pay for it. They have a huge debt on the bank for paying for my brother's education and supplies, such as special food, medicines and therapies. I found out about the debt and I want to pay for it as their anniversary gift. My stepfather is a very good man and even though I'm not his daughter since he married my mum has treated me as if I were, and my mum because of the situation my family has always been through she couldn't finish her university so her jobs are very poorly paid. this year is going to be their 10 years anniversary and I want to help them take a little bit of the weight out of their shoulders so that when I manage to find a job I can still help them pay for my brother but right now for me it is impossible to find a job while I'm at school and looking after my brother on the afternoons.
Please I beg you help me, help my parents and my brother.
Thank you very much every cent counts.

Laura.