It's actually implied by one scene, the one where Daisy takes the form of Yumi, Tsuneyo, and finally Ayane, though she only took Ayane's form under duress, and she didn't want to ask the last question at all "because of what it would mean for (her)"
The question she didn't want to ask was the name of Ayane's unborn child, so the implication there is that by asking Akira to name the unborn child, she's also asking him to name her.