This is the best thing you could have done for yourself and your brother. Ask if anyone hire a lawyer who can help you fight against the false allegation made against you. Ask if you can take a lie detector test to prove that not what you said. You are brave for telling someone about what had happen to you. If it anyone fault it is your mother because she could have walk at anytime she could have called the police at anytime she could have taking both you and your sibling to the doctor at anytime. It sound like she want to play the victim and gain sympathy from other because of her embarrassment. I would feel sorry for her because she is that blind that she chose her husband over her kids. What kind of mother does that?