That would be a bad deal, even more so with the 3 year old. But it's not your fault, i'm sure you did what you could to avoid the accident.
My grandfather drove truck his whole life. Going through a town in Cananda a girl was on a bike to big for her, and could'nt stop at the curb. He watched her go under his trailer, and felt the trailer roll up on her, he kept moving knowing stopping on top of her would be bad, when he felt the back axle clear her he stopped and yelled for help (before cell phones). It broke a lot of her bones, but she did survive. He always said that was something that crossed his mind almost everyday.