I've known a similar wòman. Well educated, middle class, 6 children, 5 in care, 1 died as a baby. This was around 20 years ago. She said, resentfully, 'I don't know what X (infant death) died of they never gave me a death certificate'. I gathered from this that the child had died in hospital, so she hadn't registered the death herself, nor arranged a funeral. I guessed she had simply walked away from it. She was quite the most deranged person I ever met but apparently, according to doctors, not mentally ìll. Inexplicable. Very depressing.