It's been about a year since she left us and on Saturday, DD1, for some reason suddenly said she never wanted to see her again and got very upset.
Apart from giving them cold food (stew not salad), she also:
pushed the girls away (physically) when they came near her
told them whenever anyone rang the doorbell that someone had come to steal them away and they would never see their mummy and daddy again
disappeared up to her room to have a nap and left them downstairs to watch television on their own for a couple of hours (when they were 2 and 4)
I dread to think what else. At least their doorbell phobia is now explained