Wolfe dismissed his armour and climbed into the linked sleeping bags between Cassie and Ella to get some sleep. He knew he would be awake again when they got up for their watch, so he planned to make the best of his time meditating to expand his second mana focus.
For his mind, it was almost as good as sleep, and he knew his body would be perfectly rested.
What he had forgotten was that the other Witches nearby could feel the ebb and flow of his mana as he stretched his Mana Focus and then fed the excess to his Witches.
Normally a person's aura was placid while sleeping or meditating, but theirs pulsed as he fed them power and slowly grew. It wasn't much, only a few percent per night, but any observant Witch who was sitting that close would notice.