In the whole ‘I’m being friendly with the simple initiative’ and letting you guys act in whatever order on ‘Players Turn’, if someone healed Amaryllis up I’d let Haruki take a proper turn. The ‘risk’ of snowballing Exhaustion is dangerous enough that I don’t feel compelled to ‘steal’ turns from my players because they chose to be fluffy.

Do as you will, but in general I will be ‘friendly’ with interpretations and activations like this. I’ll specify if something has Legendary actions and order matters.