We have friends who have a 7 year old. She is a grumpy little thing. Very rarely is she interested in having a conversation with you. I have tried many different ways to interact with her but she typically tells me that she's busy (she's on her tablet) or she ignores me completely. Other times I ask her questions and she throws my question back to me in a mocking way.

How do you respond to a school-ager who is like this? How do you get a conversation going with them?