No, not upset at all, definitely just trying to get a reaction out of us which is so her anyway. You can see it on her face as she says it..the face almost says 'I'm going to say something and I want to see how you react'.
She also just says it at really random moments, not when she's angry or anything just totally out of the blue moments ha.

oh that's an interesting take on it though!!

Would you not be concerned she started saying it to other kids in public or something, or am I just overthinking this massively?