DD has taken to saying this recently. I try not to over-react, and usually say to her "why do you feel that way". Her answer is often along the lines of "because they'll buy me more toys". Comical, but of course, I wonder if there's something deeper to it...and the self doubt sets in.
Other times she will say something like "I wish X was my mummy, and not you" - X is her babysitter. I can think it through logically, and know that she might say she prefers X, because X is completely dedicated to serving dd's every need/whim. When X isn't around, dd must wait, sometimes entertain herself, and/or fit in. She even sometimes says "call X to come over today because I'd rather have her than you. You can do work".
Finally, I am a single mum. For the last week or so, dd has started saying "I wish I had a Daddy". I usually respond by saying "It would be nice to have a Daddy, but that's not how our family is put together". I try to respect her feelings, and know that a lack of a dad could/will be an issue at some point, but I also wonder if she's simply trying to push buttons for a reaction.
This morning, after more of these sorts of comments, I have told her that I love her, but that she isn't being nice to me, and it hurts my feelings. How can I handle this? I go from seeing the machinations of a 4 year old's attempts at emotional manipulation, to being filled with self doubt and feeling I'm failing as a mum. Suggestions will help more than you can imagine.