Advice

For context my dog got killed by a car but the facts that was stated don't make sense. To make things worse the girl who did it asked for competition to fix her car which I would've happily done but price was 3k+ (bare in mind it was a small dog she hit). Because I've advised her to go through insurance for some reason she now things she can make a claim against my dad stating its his (which is lies) but she's claiming a few things. What can I do to resolve this it's been 3 months I keep reliving the moment as it was my first dog. My daughter is still confused over the situation an it has affected the whole family majorly