DD knows that when she was tiny she had all her milk from me. It's come up in conversation both when I've been in the bath and when we've been around new borns bfing. She knows I don't have any milk left.
A few months ago she started asking for milk and when I went to the fridge she'd say "no, I want mummy milk". It didn't last very long, but twice in the last week when she's been really tired and teary she's begged me for mummy milk. She touches my boobs and says "pleeeeeeeeaaaaaaaase!" It's like she knows it would be a comfort.
I've been finding it quite upsetting because I'd love to be able to soothe her with a feed if I could, but I can't and she doesn't understand 
Has anyone else experienced this?