Similar thing happened to me, an 80 year old woman did a U turn straight in front of me. I braked as hard as I could but still hit her car side on. The front of my car hit hers exactly between the front and rear door. She got out and said ''where ever did you come from, I didn't see you'' . I explained that I was behind her when she did a U turn directly in front of me. Then she said ''well you couldn't have had your lights on'' ( it was daylight but raining) , I pointed to my car and said ''look the lights are still on now !'' which was true. She had a woollen hat pulled down so far it was half over her eyes and glasses like the bottom of a milk bottle
We swapped details and she dove off.
Later I got the insurance claim, she claimed I had run into the back of her car when she stopped so it was all my fault. Luckily I knew where she lived so I took a photo of her car with damage between the front and rear doors and the back untouched and sent it to my insurance company , I took one of my car as well with the front end damage .
5 Days later I got a cheque for £500 to cover the cost of my car and a letter saying she had accepted full responcibility.
I think your 'old dear is of the same breed.
By the way my car was an old Ford Escort that I had paid £50 for so I was happy with the £500 , I even sold the damaged car for scrap and got the £50 back.