Middle name for Mackenzie?

My best friend's sister is pregnant with her third child. She already has two daughters, Kaitlyn Dawn and Leilani Denise. For the third baby she likes the name Makayla Danielle. She also likes Mackenzie, but doesn't think Danielle sounds good with Mackenzie and doesn't know of a middle name for Mackenzie. She wants the middle name to start with a D, like her other two daughters. Any suggestions?