If no-one is hurt, at least you still have your family. Your computer collection can be probably re-created, although with problems, and hardship.
I don't know what the laws are in France, but perhaps your father can be helped [more] now, assuming he hasn't had any before.
In the meantime, I'm sorry to hear you've had such problems, and I hope things get better soon for you and your family.
PS, my Dad has Alzheimers now, and it has been a burden for him and our family, I don't wish these kind of problems on anyone.